Fix a few docs build issues (#33685)

Noticed when doing `make webdocs`

docs/docsite/rst/become.rst

@@ -280,7 +280,7 @@ If a password is required to enter enable mode this can be specified by doing on
 
 For more information about ``network_cli`` see :ref:`network-cli`.
 
-.. _become-network_auth_and_auth_password
+.. _become-network-auth-and-auth-password:
 
 authorize and auth_pass
 -----------------------

docs/docsite/rst/porting_guide_2.4.rst

@@ -164,7 +164,7 @@ Tests
 Tests succeeded/failed
 -----------------------
 
-Prior to Ansible version 2.4, a task return code of ``rc`` would override a return code of ``failed``. In version 2.4,  both ``rc`` and ``failed`` are used to calculate the state of the task. Because of this, test plugins ``succeeded``/``failed``` have also been changed. This means that overriding a task failure with ``failed_when: no`` will result in ``succeeded``/``failed`` returning ``True``/``False``. For example:
+Prior to Ansible version 2.4, a task return code of ``rc`` would override a return code of ``failed``. In version 2.4,  both ``rc`` and ``failed`` are used to calculate the state of the task. Because of this, test plugins ``succeeded``/``failed``` have also been changed. This means that overriding a task failure with ``failed_when: no`` will result in ``succeeded``/``failed`` returning ``True``/``False``. For example::
 
     - command: /bin/false
       register: result

lib/ansible/plugins/callback/unixy.py

@@ -13,7 +13,7 @@ DOCUMENTATION = '''
     short_description: condensed Ansible output
     version_added: 2.5
     description:
-      - Consolidated Ansible output in the style of *NIX startup logs
+      - Consolidated Ansible output in the style of LINUX/UNIX startup logs.
     extends_documentation_fragment:
       - default_callback
     requirements: