fix typo

Author: Moons08

pandas/core/indexes/base.py

@@ -1354,8 +1354,8 @@ def rename(self, name, inplace=False):
         new index (of same type and class...etc) [if inplace, returns None]
 
         Examples
-        -------
-        >>> idx = Index([1, 2, 3, 4], name = 'foo')
+        --------
+        >>> idx = Index([1, 2, 3, 4], name='foo')
         Int64Index([1, 2, 3, 4], dtype='int64', name='foo')
         >>> idx.rename('bar')
         Int64Index([1, 2, 3, 4], dtype='int64', name='bar')