Fix docs for new commonpath and normpath filters (#78897)

lib/ansible/plugins/filter/commonpath.yml

@@ -7,15 +7,16 @@ DOCUMENTATION:
     - Returns the longest common path from the given list of paths.
   options:
     _input:
-      description: A list of paths
+      description: A list of paths.
-      type: list of path
+      type: list
+      elements: path
       required: true
   seealso:
     - plugin: ansible.builtin.basename
       plugin_type: filter
 EXAMPLES: |
 
-  # To get the longest common path(ex. '/foo/bar') from the given list of paths(ex. ['/foo/bar/foobar','/foo/bar']) 
+  # To get the longest common path (ex. '/foo/bar') from the given list of paths (ex. ['/foo/bar/foobar','/foo/bar'])
   {{ listofpaths | commonpath }}
 
 RETURN:

lib/ansible/plugins/filter/normpath.yml

@@ -4,10 +4,10 @@ DOCUMENTATION:
   version_added: "2.15"
   short_description: Normalize a pathname
   description:
-    - Returns the normalized pathname by collapsing redundant separators and up-level references
+    - Returns the normalized pathname by collapsing redundant separators and up-level references.
   options:
     _input:
-      description: A path
+      description: A path.
       type: path
       required: true
   seealso:
@@ -15,10 +15,10 @@ DOCUMENTATION:
       plugin_type: filter
 EXAMPLES: |
 
-  # To get a normalized path(ex. '/foo/bar') from the path(ex. '/foo//bar') 
+  # To get a normalized path (ex. '/foo/bar') from the path (ex. '/foo//bar')
   {{ path | normpath }}
 
 RETURN:
   _value:
     description: The normalized path from the path given.
-    type: path
+    type: path