add sphinx nitpick_ignore_regex configuration (#2649)

* add sphinx nitpick_ignore_regex configuration

ignore everything in ansible.module_utils._internal

* fix regex

* Update docs/docsite/rst/conf.py

Co-authored-by: Felix Fontein <felix@fontein.de>

---------

Co-authored-by: Felix Fontein <felix@fontein.de>

Author: s-hertel

docs/docsite/rst/conf.py

@@ -175,6 +175,10 @@
     'porting_guides/core_porting_guides',
 ] if tags.has('ansible') else '<UNKNOWN>'
 
+nitpick_ignore_regex = [
+    (r"py:.*", r"ansible\.(?:.*\.)?_internal\..*"),
+]
+
 # The reST default role (used for this markup: `text`) to use for all
 # documents.
 # default_role = None

docs/docsite/rst/reference_appendices/module_utils.rst

@@ -26,15 +26,6 @@ To use this functionality, include ``import ansible.module_utils.basic`` in your
 .. automodule:: ansible.module_utils.basic
    :members:
 
-
-PluginInfo
-==========
-
-To use this functionality, include ``from ansible.module_utils.common.messages import PluginInfo`` in your module.
-
-.. autoclass:: ansible.module_utils.common.messages.PluginInfo
-   :members:
-
 Argument Spec
 =============