bpo-46586: Fix more erroneous doc links to builtins (GH-31429)

Co-authored-by: Jelle Zijlstra <[email protected]>
Co-authored-by: Éric <[email protected]>
(cherry picked from commit cc6ae4f)

Co-authored-by: Meer Suri <[email protected]>

Author: miss-islington

Doc/library/fileinput.rst

@@ -227,5 +227,5 @@ The two following opening hooks are provided by this module:
       Added the optional *errors* parameter.
 
    .. deprecated:: 3.10
-      This function is deprecated since :func:`input` and :class:`FileInput`
+      This function is deprecated since :func:`fileinput.input` and :class:`FileInput`
       now have *encoding* and *errors* parameters.

Doc/library/urllib.request.rst

@@ -739,7 +739,7 @@ The following attribute and methods should only be used by classes derived from
 
    This method, if implemented, will be called by the parent
    :class:`OpenerDirector`.  It should return a file-like object as described in
-   the return value of the :meth:`open` of :class:`OpenerDirector`, or ``None``.
+   the return value of the :meth:`~OpenerDirector.open` method of :class:`OpenerDirector`, or ``None``.
    It should raise :exc:`~urllib.error.URLError`, unless a truly exceptional
    thing happens (for example, :exc:`MemoryError` should not be mapped to
    :exc:`URLError`).

Doc/library/zipfile.rst

@@ -289,7 +289,7 @@ ZipFile Objects
       compressed text files in :term:`universal newlines` mode.
 
    .. versionchanged:: 3.6
-      :meth:`open` can now be used to write files into the archive with the
+      :meth:`ZipFile.open` can now be used to write files into the archive with the
       ``mode='w'`` option.
 
    .. versionchanged:: 3.6