DOC: ensure indexer properties get docstring

Author: jorisvandenbossche

pandas/core/generic.py

@@ -1034,7 +1034,7 @@ def _indexer(self):
                     setattr(self, iname, i)
                 return i
 
-            setattr(cls, name, property(_indexer))
+            setattr(cls, name, property(_indexer, doc=indexer.__doc__))
 
             # add to our internal names set
             cls._internal_names_set.add(iname)