DOC: Fixed DataFrame.plot docs (#31167)

Author: lithomas1

pandas/plotting/_core.py

@@ -374,7 +374,6 @@ def hist_frame(
     <class 'numpy.ndarray'>
 """
 
-
 _backend_doc = """\
 backend : str, default None
     Backend to use instead of the backend specified in the option
@@ -847,6 +846,8 @@ def __call__(self, *args, **kwargs):
 
         return plot_backend.plot(data, kind=kind, **kwargs)
 
+    __call__.__doc__ = __doc__
+
     def line(self, x=None, y=None, **kwargs):
         """
         Plot Series or DataFrame as lines.