zabbix_maintenance examples fixes

library/monitoring/zabbix_maintenance

@@ -119,8 +119,18 @@ EXAMPLES = '''
                       user=ansible
                       passwd=pAsSwOrD
 
+# Create maintenance window named "update"
+# for host www1.example.com and without data collection.
+- zabbix_maintenance: name=update
+                      host=www1.example.com
+                      state=present
+                      collect_data=false
+                      server=https://monitoring.example.com
+                      user=ansible
+                      passwd=pAsSwOrD
+
 # Remove maintenance window named "Test1"
-- zabbix_maintenance: name=Test1" 
+- zabbix_maintenance: name=Test1
                       state=absent
                       server=https://monitoring.example.com
                       user=ansible