Adds example of using wildcard domain in pam_limits (#43391)

* Adds example of using wildcard domain

* Fixes W293

* Slight formatting changes on the examples

lib/ansible/modules/system/pam_limits.py

@@ -99,28 +99,35 @@ notes:
 '''
 
 EXAMPLES = '''
-# Add or modify nofile soft limit for the user joe
-- pam_limits:
+- name: Add or modify nofile soft limit for the user joe
+  pam_limits:
     domain: joe
     limit_type: soft
     limit_item: nofile
     value: 64000
 
-# Add or modify fsize hard limit for the user smith. Keep or set the maximal value.
-- pam_limits:
+- name: Add or modify fsize hard limit for the user smith. Keep or set the maximal value.
+  pam_limits:
     domain: smith
     limit_type: hard
     limit_item: fsize
     value: 1000000
     use_max: yes
 
-# Add or modify memlock, both soft and hard, limit for the user james with a comment.
-- pam_limits:
+- name: Add or modify memlock, both soft and hard, limit for the user james with a comment.
+  pam_limits:
     domain: james
     limit_type: '-'
     limit_item: memlock
     value: unlimited
     comment: unlimited memory lock for james
+
+- name: Add or modify hard nofile limits for wildcard domain
+  pam_limits:
+    domain: '*'
+    limit_type: hard
+    limit_item: nofile
+    value: 39693561
 '''
 
 import os