Use single quotes and update krankerl.toml

Signed-off-by: Julius Härtl <jus@bitgrid.net>

js/service/ApiService.js

@@ -166,7 +166,7 @@ app.factory('ApiService', function ($http, $q) {
 	ApiService.prototype.getName = function () {
 		var funcNameRegex = /function (.{1,})\(/;
 		var results = (funcNameRegex).exec((this).constructor.toString());
-		return (results && results.length > 1) ? results[1] : "";
+		return (results && results.length > 1) ? results[1] : '';
 	};
 
 	return ApiService;