encoding jupyter notebooks in examples folder closes #59 (#193)

* added encoding jupyter notebooks

* updated encoding jupyter notebooks

* updated the encoding notebooks

Author: ashok49473

examples/encoding/CountFrequencyEncoder.ipynb

@@ -14,11 +14,11 @@
 
 class DecisionTreeEncoder(BaseCategoricalTransformer):
     """
-    The DecisionTreeCategoricalEncoder() encodes categorical variables with predictions
+    The DecisionTreeEncoder() encodes categorical variables with predictions
     of a decision tree model.
 
     The categorical variable will be first encoded into integers with the
-    OrdinalCategoricalEncoder(). The integers can be assigned arbitrarily to the
+    OrdinalEncoder(). The integers can be assigned arbitrarily to the
     categories or following the mean value of the target in each category.
 
     Then a decision tree will be fit using the resulting numerical variable to predict