Update image links with aboslute path

Author: jettify

README.rst

@@ -68,9 +68,9 @@ Supported Optimizers
 AccSGD
 ------
 
-+----------------------------------------+-----------------------------------------+
-| .. image:: docs/rastrigin_AccSGD.png   |  .. image:: docs/rosenbrock_AccSGD.png  |
-+----------------------------------------+-----------------------------------------+
++-----------------------------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------------+
+| .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rastrigin_AccSGD.png   |  .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rosenbrock_AccSGD.png  |
++-----------------------------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------------+
 
 .. code:: python
 
@@ -95,9 +95,9 @@ AccSGD
 AdaBound
 --------
 
-+-----------------------------------------+------------------------------------------+
-| .. image:: docs/rastrigin_AdaBound.png  |  .. image:: docs/rosenbrock_AdaBound.png |
-+-----------------------------------------+------------------------------------------+
++------------------------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------------------------------------+
+| .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rastrigin_AdaBound.png  |  .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rosenbrock_AdaBound.png |
++------------------------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------------------------------------+
 
 .. code:: python
 
@@ -128,9 +128,9 @@ upper bounds. The dynamic learning rate bounds are based on the exponential
 moving averages of the adaptive learning rates themselves, which smooth out
 unexpected large learning rates and stabilize the training of deep neural networks.
 
-+-----------------------------------------+------------------------------------------+
-| .. image:: docs/rastrigin_AdaMod.png    |  .. image:: docs/rosenbrock_AdaMod.png   |
-+-----------------------------------------+------------------------------------------+
++------------------------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------------------------------------+
+| .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rastrigin_AdaMod.png    |  .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rosenbrock_AdaMod.png   |
++------------------------------------------------------------------------------------------------------------+-------------------------------------------------------------------------------------------------------------+
 
 .. code:: python
 
@@ -158,9 +158,9 @@ gradient, the step size is adjusted for each parameter in such
 a way that it should have a larger step size for faster gradient changing
 parameters and a lower step size for lower gradient changing parameters.
 
-+-----------------------------------------+-------------------------------------------+
-| .. image:: docs/rastrigin_DiffGrad.png  |  .. image:: docs/rosenbrock_DiffGrad.png  |
-+-----------------------------------------+-------------------------------------------+
++------------------------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------+
+| .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rastrigin_DiffGrad.png  |  .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rosenbrock_DiffGrad.png  |
++------------------------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------+
 
 .. code:: python
 
@@ -184,9 +184,9 @@ parameters and a lower step size for lower gradient changing parameters.
 Lamb
 ----
 
-+-------------------------------------+---------------------------------------+
-| .. image:: docs/rastrigin_Lamb.png  |  .. image:: docs/rosenbrock_Lamb.png  |
-+-------------------------------------+---------------------------------------+
++--------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------+
+| .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rastrigin_Lamb.png  |  .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rosenbrock_Lamb.png  |
++--------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------+
 
 .. code:: python
 
@@ -211,9 +211,9 @@ Lamb
 NovoGrad
 --------
 
-+-----------------------------------------+-------------------------------------------+
-| .. image:: docs/rastrigin_NovoGrad.png  |  .. image:: docs/rosenbrock_NovoGrad.png  |
-+-----------------------------------------+-------------------------------------------+
++------------------------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------+
+| .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rastrigin_NovoGrad.png  |  .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rosenbrock_NovoGrad.png  |
++------------------------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------+
 
 .. code:: python
 
@@ -240,9 +240,9 @@ NovoGrad
 RAdam
 -----
 
-+--------------------------------------+----------------------------------------+
-| .. image:: docs/rastrigin_RAdam.png  |  .. image:: docs/rosenbrock_RAdam.png  |
-+--------------------------------------+----------------------------------------+
++---------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------+
+| .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rastrigin_RAdam.png  |  .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rosenbrock_RAdam.png  |
++---------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------------------------------+
 
 .. code:: python
 
@@ -266,9 +266,9 @@ RAdam
 SGDW
 ----
 
-+-------------------------------------+---------------------------------------+
-| .. image:: docs/rastrigin_SGDW.png  |  .. image:: docs/rosenbrock_SGDW.png  |
-+-------------------------------------+---------------------------------------+
++--------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------+
+| .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rastrigin_SGDW.png  |  .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rosenbrock_SGDW.png  |
++--------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------+
 
 .. code:: python
 
@@ -296,9 +296,9 @@ Yogi
 Yogi is optimization algorithm based on ADAM with more fine grained effective
 learning rate control, and has similar theoretical guarantees on convergence as ADAM.
 
-+-------------------------------------+---------------------------------------+
-| .. image:: docs/rastrigin_Yogi.png  |  .. image:: docs/rosenbrock_Yogi.png  |
-+-------------------------------------+---------------------------------------+
++--------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------+
+| .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rastrigin_Yogi.png  |  .. image:: https://raw.githubusercontent.com/jettify/pytorch-optimizer/master/docs/rosenbrock_Yogi.png  |
++--------------------------------------------------------------------------------------------------------+----------------------------------------------------------------------------------------------------------+
 
 .. code:: python