fix comment

Author: jemygraw

src/main/java/com/qiniu/rtc/RtcAppManager.java

@@ -69,7 +69,7 @@ public Response getApp(String appId) throws QiniuException {
     /**
      * @param appId 房间所属帐号的 app
      * @return Response      如果不读取Response的数据，请注意调用Close方法关闭
-     * @throws Exception
+     * @throws QiniuException
      */
     public Response deleteApp(String appId) throws QiniuException {
         String urlStr = String.format("%s%s%s", host, "/v3/apps/", appId);

src/main/java/com/qiniu/rtc/RtcRoomManager.java

@@ -43,7 +43,6 @@ public Response listUser(String appId, String roomName) throws QiniuException {
      * @param userId   被踢人员
      * @return Response      如果不读取Response的数据，请注意调用Close方法关闭
      * @throws QiniuException
-     * @returnjsonString
      */
     public Response kickUser(String appId, String roomName, String userId) throws QiniuException {
         String urlStr = getLink(appId, roomName, "users/" + userId);