Closes #19416: fix references in the nntplib docs.

Doc/library/nntplib.rst

@@ -395,18 +395,18 @@ tuples or objects that the method normally returns will be empty.
 
 .. method:: NNTP.next()
 
-   Send a ``NEXT`` command.  Return as for :meth:`stat`.
+   Send a ``NEXT`` command.  Return as for :meth:`.stat`.
 
 
 .. method:: NNTP.last()
 
-   Send a ``LAST`` command.  Return as for :meth:`stat`.
+   Send a ``LAST`` command.  Return as for :meth:`.stat`.
 
 
 .. method:: NNTP.article(message_spec=None, *, file=None)
 
    Send an ``ARTICLE`` command, where *message_spec* has the same meaning as
-   for :meth:`stat`.  Return a tuple ``(response, info)`` where *info*
+   for :meth:`.stat`.  Return a tuple ``(response, info)`` where *info*
    is a :class:`~collections.namedtuple` with three attributes *number*,
    *message_id* and *lines* (in that order).  *number* is the article number
    in the group (or 0 if the information is not available), *message_id* the