Update docs.

library/system/getent

@@ -61,18 +61,23 @@ author: Brian Coca
 EXAMPLES = '''
 # get root user info
 - getent: database=passwd key=root
+  register: root_info
 
 # get all groups
 - getent: database=group split=':'
+  register: groups
 
 # get all hosts, split by tab
 - getent: database=hosts
+  register: hosts
 
 # get http service info, no error if missing
 - getent: database=services key=http fail_key=False
+  register: http_info
 
 # get user password hash (requires sudo/root)
 - getent: database=shadow key=www-data split=:
+  register: pw_hash
 
 '''