[PR #9535/3af793c2 backport][stable-10] plugins (become, callback, filter): style adjustments (#9545)

plugins (become, callback, filter): style adjustments (#9535)

* plugins (become, callback, filter, inventory): style adjustments

* remove inventory plugins from PR

* adjustments from review

* typo

(cherry picked from commit 3af793c2c1)

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>

plugins/filter/counter.py

@@ -6,34 +6,35 @@
 from __future__ import (absolute_import, division, print_function)
 __metaclass__ = type
 
-DOCUMENTATION = '''
-  name: counter
-  short_description: Counts hashable elements in a sequence
-  version_added: 4.3.0
-  author: Rémy Keil (@keilr)
-  description:
-    - Counts hashable elements in a sequence.
-  options:
-    _input:
-      description: A sequence.
-      type: list
-      elements: any
-      required: true
-'''
+DOCUMENTATION = r"""
+name: counter
+short_description: Counts hashable elements in a sequence
+version_added: 4.3.0
+author: Rémy Keil (@keilr)
+description:
+  - Counts hashable elements in a sequence.
+options:
+  _input:
+    description: A sequence.
+    type: list
+    elements: any
+    required: true
+"""
 
-EXAMPLES = '''
+EXAMPLES = r"""
 - name: Count occurrences
   ansible.builtin.debug:
     msg: >-
       {{ [1, 'a', 2, 2, 'a', 'b', 'a'] | community.general.counter }}
     # Produces: {1: 1, 'a': 3, 2: 2, 'b': 1}
-'''
+"""
 
-RETURN = '''
-  _value:
-    description: A dictionary with the elements of the sequence as keys, and their number of occurrences in the sequence as values.
-    type: dictionary
-'''
+RETURN = r"""
+_value:
+  description: A dictionary with the elements of the sequence as keys, and their number of occurrences in the sequence as
+    values.
+  type: dictionary
+"""
 
 from ansible.errors import AnsibleFilterError
 from ansible.module_utils.common._collections_compat import Sequence