fix rst syntax error

Author: baruch11

README.rst

@@ -105,7 +105,8 @@ The full documentation can be found `on this link <https://qolmat.readthedocs.io
 
 **How does Qolmat work ?**
 
-| Qolmat allows model selection for scikit-learn compatible imputation algorithms, by performing three steps pictured below:
+Qolmat allows model selection for scikit-learn compatible imputation algorithms, by performing three steps pictured below:
+
 1) For each of the K folds, Qolmat artificially masks a set of observed values using a default or user specified `hole generator <explanation.html#hole-generator>`_.
 2) For each fold and each compared `imputation method <imputers.html>`_, Qolmat fills both the missing and the masked values, then computes each of the default or user specified `performance metrics <explanation.html#metrics>`_.
 3) For each compared imputer, Qolmat pools the computed metrics from the K folds into a single value.