pandas-dev#28792 Doc Fix SA04 Errors

Author: nagesh-chowdaiah

pandas/_libs/tslibs/timedeltas.pyx

@@ -1056,7 +1056,7 @@ cdef class _Timedelta(timedelta):
 
         See Also
         --------
-        Timestamp.isoformat : function is used to convert the given
+        Timestamp.isoformat : Function is used to convert the given
          Timestamp object into the ISO format.
 
         Notes

pandas/core/groupby/groupby.py

@@ -1925,7 +1925,7 @@ def backfill(self, limit=None):
         See Also
         --------
         Series.backfill :  Backward fill the missing values in the dataset.
-        DataFrame.backfill:  Backward fill the missing values in the dataset
+        DataFrame.backfill:  Backward fill the missing values in the dataset.
         Series.fillna: Fill NaN values of a Series.
         DataFrame.fillna: Fill NaN values of a DataFrame.
         """