DOC: Update param descriptions for axis in NDFrame methods (#28253)

Author: danielplawrence

pandas/core/generic.py

@@ -2533,8 +2533,9 @@ def to_msgpack(self, path_or_buf=None, encoding="utf-8", **kwargs):
 
         Parameters
         ----------
-        path : str (file path), buffer-like, or None
-            if None, return generated bytes
+        path : str, buffer-like, or None
+            Destination for the serialized object.
+            If None, return generated bytes
         append : bool whether to append to an existing msgpack
             (default is False)
         compress : type of compressor (zlib or blosc), default to None (no
@@ -4621,7 +4622,7 @@ def filter(self, items=None, like=None, regex=None, axis=None):
             Keep labels from axis for which "like in label == True".
         regex : str (regular expression)
             Keep labels from axis for which re.search(regex, label) == True.
-        axis : int or str
+        axis : {0 or ‘index’, 1 or ‘columns’, None}, default None
             The axis to filter on, expressed either as an index (int)
             or axis name (str). By default this is the info axis,
             'index' for Series, 'columns' for DataFrame.
@@ -4856,7 +4857,7 @@ def sample(
         random_state : int or numpy.random.RandomState, optional
             Seed for the random number generator (if int), or numpy RandomState
             object.
-        axis : int or str, optional
+        axis : {0 or ‘index’, 1 or ‘columns’, None}, default None
             Axis to sample. Accepts axis number or name. Default is stat axis
             for given data type (0 for Series and DataFrames).
 
@@ -9444,7 +9445,7 @@ def tshift(self, periods=1, freq=None, axis=0):
         freq : DateOffset, timedelta, or str, default None
             Increment to use from the tseries module
             or time rule expressed as a string (e.g. 'EOM')
-        axis : int or str
+        axis : {0 or ‘index’, 1 or ‘columns’, None}, default 0
             Corresponds to the axis that contains the Index
 
         Returns