fix missing ,

uffd/default_config.cfg

@@ -111,7 +111,7 @@ SERVICES=[
 #		'infos': [
 #			{
 #				'title': 'uffd',
-#				'button_text': 'Documentation' # Defaults to the title if not set
+#				'button_text': 'Documentation', # Defaults to the title if not set
 #				'html': '<p>Some information about the service as html</p>',
 #				'required_group': 'users',
 #			},