Porting guide fixes. (#77376)

* Update porting guide generation.
* Fix 2.13 porting guide link.

docs/docsite/rst/porting_guides/porting_guide_core_2.13.rst

@@ -9,7 +9,7 @@ This section discusses the behavioral changes between ``ansible-core`` 2.12 and
 
 It is intended to assist in updating your playbooks, plugins and other parts of your Ansible infrastructure so they will work with this version of Ansible.
 
-We suggest you read this page along with `ansible-core Changelog for 2.13 <https://github.com/ansible/ansible/blob/devel/changelogs/CHANGELOG-v2.13.rst>`_ to understand what updates you may need to make.
+We suggest you read this page along with `ansible-core Changelog for 2.13 <https://github.com/ansible/ansible/blob/stable-2.13/changelogs/CHANGELOG-v2.13.rst>`_ to understand what updates you may need to make.
 
 This document is part of a collection on porting. The complete list of porting guides can be found at :ref:`porting guides <porting_guides>`.
 

hacking/build_library/build_ansible/command_plugins/porting_guide.py

@@ -24,7 +24,7 @@ This section discusses the behavioral changes between Ansible {{ prev_ver }} and
 
 It is intended to assist in updating your playbooks, plugins and other parts of your Ansible infrastructure so they will work with this version of Ansible.
 
-We suggest you read this page along with `Ansible Changelog for {{ ver }} <https://github.com/ansible/ansible/blob/devel/changelogs/CHANGELOG-v{{ ver }}.rst>`_ to understand what updates you may need to make.
+We suggest you read this page along with `Ansible Changelog for {{ ver }} <https://github.com/ansible/ansible/blob/stable-{{ ver }}/changelogs/CHANGELOG-v{{ ver }}.rst>`_ to understand what updates you may need to make.
 
 This document is part of a collection on porting. The complete list of porting guides can be found at :ref:`porting guides <porting_guides>`.
 
@@ -117,7 +117,7 @@ def generate_porting_guide(version):
 
 
 def write_guide(version, guide_content):
-    filename = 'porting_guide_{0}.rst'.format(version)
+    filename = 'docs/docsite/rst/porting_guides/porting_guide_core_{0}.rst'.format(version)
     with open(filename, 'w') as out_file:
         out_file.write(guide_content)