gh-101100: Fix sphinx warnings in library/codecs.rst (#110979)

Doc/library/codecs.rst

@@ -520,7 +520,9 @@ The base :class:`Codec` class defines these methods which also define the
 function interfaces of the stateless encoder and decoder:
 
 
-.. method:: Codec.encode(input, errors='strict')
+.. class:: Codec
+
+   .. method:: encode(input, errors='strict')
 
       Encodes the object *input* and returns a tuple (output object, length consumed).
       For instance, :term:`text encoding` converts
@@ -538,7 +540,7 @@ function interfaces of the stateless encoder and decoder:
       of the output object type in this situation.
 
 
-.. method:: Codec.decode(input, errors='strict')
+   .. method:: decode(input, errors='strict')
 
       Decodes the object *input* and returns a tuple (output object, length
       consumed). For instance, for a :term:`text encoding`, decoding converts
@@ -705,7 +707,7 @@ Stream Encoding and Decoding
 
 The :class:`StreamWriter` and :class:`StreamReader` classes provide generic
 working interfaces which can be used to implement new encoding submodules very
-easily. See :mod:`encodings.utf_8` for an example of how this is done.
+easily. See :mod:`!encodings.utf_8` for an example of how this is done.
 
 
 .. _stream-writer-objects:
@@ -895,9 +897,10 @@ The design is such that one can use the factory functions returned by the
 .. class:: StreamRecoder(stream, encode, decode, Reader, Writer, errors='strict')
 
    Creates a :class:`StreamRecoder` instance which implements a two-way conversion:
-   *encode* and *decode* work on the frontend — the data visible to
-   code calling :meth:`read` and :meth:`write`, while *Reader* and *Writer*
-   work on the backend — the data in *stream*.
+   *encode* and *decode* work on the frontend — the data visible to
+   code calling :meth:`~StreamReader.read` and :meth:`~StreamWriter.write`,
+   while *Reader* and *Writer*
+   work on the backend — the data in *stream*.
 
    You can use these objects to do transparent transcodings, e.g., from Latin-1
    to UTF-8 and back.
@@ -1417,8 +1420,8 @@ to :class:`bytes` mappings. They are not supported by :meth:`bytes.decode`
 |                      | quotedprintable, | quoted printable.            | ``quotetabs=True`` /         |
 |                      | quoted_printable |                              | :meth:`quopri.decode`        |
 +----------------------+------------------+------------------------------+------------------------------+
-| uu_codec             | uu               | Convert the operand using    | :meth:`uu.encode` /          |
-|                      |                  | uuencode.                    | :meth:`uu.decode`            |
+| uu_codec             | uu               | Convert the operand using    |                              |
+|                      |                  | uuencode.                    |                              |
 +----------------------+------------------+------------------------------+------------------------------+
 | zlib_codec           | zip, zlib        | Compress the operand using   | :meth:`zlib.compress` /      |
 |                      |                  | gzip.                        | :meth:`zlib.decompress`      |

Doc/tools/.nitignore

@@ -42,7 +42,6 @@ Doc/library/bisect.rst
 Doc/library/bz2.rst
 Doc/library/calendar.rst
 Doc/library/cmd.rst
-Doc/library/codecs.rst
 Doc/library/collections.abc.rst
 Doc/library/collections.rst
 Doc/library/concurrent.futures.rst