fixed hidden warnings from extra tests - batch 2 (#10027)

* fixed hidden warnings from extra tests - batch 2

* remove multiple yaml doc markers from EXAMPLE blocks

* Apply suggestions from code review

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

* Apply suggestions from code review

* Apply suggestions from code review

* dig: adjust markup for return suboptions

* Update plugins/lookup/dig.py

---------

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

plugins/lookup/keyring.py

@@ -7,18 +7,18 @@
 from __future__ import (absolute_import, division, print_function)
 __metaclass__ = type
 
-DOCUMENTATION = '''
-    name: keyring
-    author:
-      - Samuel Boucher (!UNKNOWN) <boucher.samuel.c@gmail.com>
-    requirements:
-      - keyring (python library)
-    short_description: grab secrets from the OS keyring
-    description:
-      - Allows you to access data stored in the OS provided keyring/keychain.
-'''
+DOCUMENTATION = r"""
+name: keyring
+author:
+  - Samuel Boucher (!UNKNOWN) <boucher.samuel.c@gmail.com>
+requirements:
+  - keyring (python library)
+short_description: grab secrets from the OS keyring
+description:
+  - Allows you to access data stored in the OS provided keyring/keychain.
+"""
 
-EXAMPLES = """
+EXAMPLES = r"""
 - name: output secrets to screen (BAD IDEA)
   ansible.builtin.debug:
     msg: "Password: {{item}}"
@@ -31,11 +31,11 @@ EXAMPLES = """
     login_user: joe
 """
 
-RETURN = """
-  _raw:
-    description: Secrets stored.
-    type: list
-    elements: str
+RETURN = r"""
+_raw:
+  description: Secrets stored.
+  type: list
+  elements: str
 """
 
 HAS_KEYRING = True