fix error bug

Author: zlj-zz

pymycobot/error.py

@@ -117,5 +117,5 @@ def check_coords(vs):
 
 def check_rgb(args):
     for i in args:
-        if not check_range(id, [0, 255]):
+        if not check_range(i, [0, 255]):
             raise MyCobotDataException('The RGB value needs be 0 ~ 255')

setup.py

@@ -1,6 +1,6 @@
 import sys
 
-VERSION = "2.3.2"
+VERSION = "2.3.3"
 
 PYTHON_VERSION = sys.version_info[:2]
 if (2, 7) != PYTHON_VERSION < (3, 5):