[3.10] pythongh-85073: Add some missing links to source (pythonGH-99363)

Add some missing links to source from Python docs.
(cherry picked from commit 27d8dc2)

Co-authored-by: Stanley <46876382+slateny@users.noreply.github.com>

Doc/library/asyncio-task.rst

@@ -18,6 +18,10 @@ and Tasks.
 Coroutines
 ==========
 
+**Source code:** :source:`Lib/asyncio/coroutines.py`
+
+----------------------------------------------------
+
 :term:`Coroutines <coroutine>` declared with the async/await syntax is the
 preferred way of writing asyncio applications.  For example, the following
 snippet of code prints "hello", waits 1 second,
@@ -247,6 +251,10 @@ Running an asyncio Program
 Creating Tasks
 ==============
 
+**Source code:** :source:`Lib/asyncio/tasks.py`
+
+-----------------------------------------------
+
 .. function:: create_task(coro, *, name=None)
 
    Wrap the *coro* :ref:`coroutine <coroutine>` into a :class:`Task`

Doc/library/ctypes.rst

@@ -6,6 +6,8 @@
 
 .. moduleauthor:: Thomas Heller <theller@python.net>
 
+**Source code:** :source:`Lib/ctypes`
+
 --------------
 
 :mod:`ctypes` is a foreign function library for Python.  It provides C compatible

Doc/library/curses.ascii.rst

@@ -7,6 +7,8 @@
 .. moduleauthor:: Eric S. Raymond <esr@thyrsus.com>
 .. sectionauthor:: Eric S. Raymond <esr@thyrsus.com>
 
+**Source code:** :source:`Lib/curses/ascii.py`
+
 --------------
 
 The :mod:`curses.ascii` module supplies name constants for ASCII characters and

Doc/library/curses.rst

@@ -9,6 +9,8 @@
 .. sectionauthor:: Moshe Zadka <moshez@zadka.site.co.il>
 .. sectionauthor:: Eric Raymond <esr@thyrsus.com>
 
+**Source code:** :source:`Lib/curses`
+
 --------------
 
 The :mod:`curses` module provides an interface to the curses library, the

Doc/library/ensurepip.rst

@@ -7,6 +7,8 @@
 
 .. versionadded:: 3.4
 
+**Source code:** :source:`Lib/ensurepip`
+
 --------------
 
 The :mod:`ensurepip` package provides support for bootstrapping the ``pip``

Doc/library/signal.rst

@@ -4,6 +4,8 @@
 .. module:: signal
    :synopsis: Set handlers for asynchronous events.
 
+**Source code:** :source:`Lib/signal.py`
+
 --------------
 
 This module provides mechanisms to use signal handlers in Python.

Doc/library/wsgiref.rst

@@ -7,6 +7,8 @@
 .. moduleauthor:: Phillip J. Eby <pje@telecommunity.com>
 .. sectionauthor:: Phillip J. Eby <pje@telecommunity.com>
 
+**Source code:** :source:`Lib/wsgiref`
+
 --------------
 
 The Web Server Gateway Interface (WSGI) is a standard interface between web

Doc/library/zoneinfo.rst

@@ -9,6 +9,8 @@
 .. moduleauthor:: Paul Ganssle <paul@ganssle.io>
 .. sectionauthor:: Paul Ganssle <paul@ganssle.io>
 
+**Source code:** :source:`Lib/zoneinfo`
+
 --------------
 
 The :mod:`zoneinfo` module provides a concrete time zone implementation to