File Module docs, adding mode permission example with sticky bit (#36151) (#36164)

* File Module docs, adding mode permission example with sticky bit
(cherry picked from commit ef9dac548f)

lib/ansible/modules/files/file.py

@@ -84,6 +84,11 @@ EXAMPLES = '''
     owner: foo
     group: foo
     mode: 0644
+- file:
+    path: /work
+    owner: root
+    group: root
+    mode: 01777
 - file:
     src: /file/to/link/to
     dest: /path/to/symlink

lib/ansible/utils/module_docs_fragments/files.py

@@ -25,7 +25,7 @@ options:
     required: false
     default: null
     description:
-      - Mode the file or directory should be. For those used to I(/usr/bin/chmod) remember that modes are actually octal numbers (like 0644).
+      - Mode the file or directory should be. For those used to I(/usr/bin/chmod) remember that modes are actually octal numbers (like C(0644) or C(01777)).
         Leaving off the leading zero will likely have unexpected results.
         As of version 1.8, the mode may be specified as a symbolic mode (for example, C(u+rwx) or C(u=rw,g=r,o=r)).
   owner: