- fix typo in server.md

docs/cn/server.md

@@ -751,7 +751,7 @@ int main(int argc, char* argv[]) {
 
 server-thread-local与一次service回调绑定，从进service回调开始，到出service回调结束。所有的server-thread-local data会被尽量重用，在server停止前不会被删除。在实现上server-thread-local是一个特殊的bthread-local。
 
-设置ServerOptions.thread_local_data_factory后访问Controller.thread_local_data()即可获得thread-local数据。若没有设置，Controller.thread_local_data()总是返回NULL。
+设置ServerOptions.thread_local_data_factory后访问brpc::thread_local_data()即可获得thread-local数据。若没有设置，brpc::thread_local_data()总是返回NULL。
 
 若ServerOptions.reserved_thread_local_data大于0，Server会在启动前就创建这么多个数据。
 

docs/en/server.md

@@ -752,7 +752,7 @@ int main(int argc, char* argv[]) {
 
 A server-thread-local is bound to **a call to service's CallMethod**, from entering service's CallMethod, to leaving the method. All server-thread-local data are reused as much as possible and will not be deleted before stopping the server. server-thread-local is implemented as a special bthread-local.
 
-After setting ServerOptions.thread_local_data_factory, call Controller.thread_local_data() to get a thread-local. If ServerOptions.thread_local_data_factory is unset, Controller.thread_local_data() always returns NULL. 
+After setting ServerOptions.thread_local_data_factory, call brpc::thread_local_data() to get a thread-local. If ServerOptions.thread_local_data_factory is unset, brpc::thread_local_data() always returns NULL. 
 
 If ServerOptions.reserved_thread_local_data is greater than 0, Server creates so many data before serving.