indexes/base.py return docstring updates

pandas/core/indexes/base.py

@@ -1828,7 +1828,7 @@ def isna(self):
  Returns
  -------
  numpy.ndarray
- A boolean array of whether my values are NA
+ A boolean array of whether my values are NA.
 
  See Also
  --------
@@ -3098,7 +3098,7 @@ def reindex(self, target, method=None, level=None, limit=None,
  Returns
  -------
  new_index : pd.Index
- Resulting index
+ Resulting index.
  indexer : np.ndarray or None
  Indices of output values in original index.
 
@@ -4259,7 +4259,7 @@ def shift(self, periods=1, freq=None):
  Returns
  -------
  pandas.Index
- Shifted index
+ Shifted index.
 
  See Also
  --------
@@ -4422,7 +4422,7 @@ def set_value(self, arr, key, value):
  in the target are marked by -1.
  missing : ndarray of int
  An indexer into the target of the values not found.
- These correspond to the -1 in the indexer array
+ These correspond to the -1 in the indexer array.
  """
 
  @Appender(_index_shared_docs['get_indexer_non_unique'] % _index_doc_kwargs)