fixes issue #7530, serve_forever()

Doc/library/multiprocessing.rst

@@ -1133,7 +1133,7 @@ their parent process exits.  The manager classes are defined in the
 
    Create a BaseManager object.
 
-   Once created one should call :meth:`start` or :meth:`serve_forever` to ensure
+   Once created one should call :meth:`start` or ```get_server().serve_forever()`` to ensure
    that the manager object refers to a started manager process.
 
    *address* is the address on which the manager process listens for new
@@ -1149,10 +1149,6 @@ their parent process exits.  The manager classes are defined in the
       Start a subprocess to start the manager.  If *initializer* is not ``None``
       then the subprocess will call ``initializer(*initargs)`` when it starts.
 
-   .. method:: serve_forever()
-
-      Run the server in the current process.
-
    .. method:: get_server()
 
       Returns a :class:`Server` object which represents the actual server under