pandas-dev#28792 DOC: Fixing flake8 Errors

Author: nagesh-chowdaiah

pandas/core/indexes/accessors.py

@@ -236,8 +236,8 @@ def isocalendar(self):
 
         See Also
         --------
-        Timestamp.isocalendar : Function return a 3-tuple containing ISO year, week number,
-            and weekday for the given Timestamp object.
+        Timestamp.isocalendar : Function return a 3-tuple containing ISO year,
+            week number, and weekday for the given Timestamp object.
         datetime.date.isocalendar : Return a named tuple object with
             three components: year, week and weekday.