Add missing newline (#32404)

Author: davidwales

pandas/core/indexes/base.py

@@ -4817,6 +4817,7 @@ def isin(self, values, level=None):
         Int64Index([1, 2, 3], dtype='int64')
 
         Check whether each index value in a list of values.
+
         >>> idx.isin([1, 4])
         array([ True, False, False])