Change example syntax on rhn_register module

lib/ansible/modules/packaging/os/rhn_register.py

@@ -83,30 +83,44 @@ options:
 
 EXAMPLES = '''
 # Unregister system from RHN.
-- rhn_register: state=absent username=joe_user password=somepass
+- rhn_register:
+    state: absent
+    username: joe_user
+    password: somepass
 
 # Register as user (joe_user) with password (somepass) and auto-subscribe to available content.
-- rhn_register: state=present username=joe_user password=somepass
+- rhn_register:
+    state: present
+    username: joe_user
+    password: somepass
 
 # Register with activationkey (1-222333444) and enable extended update support.
-- rhn_register: state=present activationkey=1-222333444 enable_eus=true
+- rhn_register:
+    state: present
+    activationkey: 1-222333444
+    enable_eus: true
 
 # Register with activationkey (1-222333444) and set a profilename which may differ from the hostname.
-- rhn_register: state=present activationkey=1-222333444 profilename=host.example.com.custom
+- rhn_register:
+    state: present
+    activationkey: 1-222333444
+    profilename: host.example.com.custom
 
 # Register as user (joe_user) with password (somepass) against a satellite
 # server specified by (server_url).
-- rhn_register: >
-    state=present
-    username=joe_user
-    password=somepass
-    server_url=https://xmlrpc.my.satellite/XMLRPC
+- rhn_register:
+    state: present
+    username: joe_user
+    password: somepass'
+    server_url: 'https://xmlrpc.my.satellite/XMLRPC'
 
 # Register as user (joe_user) with password (somepass) and enable
 # channels (rhel-x86_64-server-6-foo-1) and (rhel-x86_64-server-6-bar-1).
-- rhn_register: state=present username=joe_user
-                password=somepass
-                channels=rhel-x86_64-server-6-foo-1,rhel-x86_64-server-6-bar-1
+- rhn_register:
+    state: present
+    username: joe_user
+    password: somepass
+    channels: rhel-x86_64-server-6-foo-1,rhel-x86_64-server-6-bar-1
 '''
 
 import sys