Update SDK_advanced_guide_offline_en.md

Yabin Li

2024-03-20 c59aacf0bee6034636e74d2d208a1fe5cd7d573b

 runtime/websocket/bin/websocket-server.cpp

@@ -85,6 +85,7 @@
          stamp_sents = FunASRGetStampSents(Result);
          FunASRFreeResult(Result);
        } else{
          std::this_thread::sleep_for(std::chrono::milliseconds(20));
          LOG(ERROR) << "FUNASR_RESULT is nullptr.";
        }
      }catch (std::exception const& e) {