Fix linting error

lib/services/serviceBus/lib/servicebusservice.js

@@ -665,7 +665,7 @@ ServiceBusService.prototype.deleteQueue = function (queuePath, callback) {
 */
 ServiceBusService.prototype.formatDeadLetterPath = function (queuePath) {
     return `${queuePath}/$DeadLetterQueue`;
-}
+};
 
 /**
 * Retrieves a queue.