docs: Update CN translation

docs/en/COPYRIGHT.rst

@@ -53,7 +53,6 @@ These third party libraries can be included into the application (firmware) prod
 
 * :component_file:`SD/MMC driver <sdmmc/sdmmc_cmd.c>` is derived from `OpenBSD SD/MMC driver`_, Copyright (C) 2006 Uwe Stuehler, and is licensed under BSD License.
 
-
 * :component:`BLE Mesh <bt/esp_ble_mesh>` is adapted from Zephyr Project, Copyright (C) 2017-2018 Intel Corporation and licensed under Apache License 2.0.
 
 * `mynewt-nimble`_, Copyright (C) 2015-2018 The Apache Software Foundation, is licensed under Apache License 2.0 as described in :component_file:`LICENSE file <bt/host/nimble/nimble/LICENSE>`.
@@ -160,7 +159,6 @@ Copyright (C) 2011 ChaN, all right reserved.
 .. _protobuf-c: https://github.com/protobuf-c/protobuf-c
 .. _Unity: https://github.com/ThrowTheSwitch/Unity
 .. _asio: https://github.com/chriskohlhoff/asio
-.. _mqtt: https://github.com/espressif/esp-mqtt
 .. _zephyr: https://github.com/zephyrproject-rtos/zephyr
 .. _mynewt-nimble: https://github.com/apache/mynewt-nimble
 .. _ESP-IDF Programming Guide: https://docs.espressif.com/projects/esp-idf/en/latest/

docs/en/api-reference/protocols/mqtt.rst

@@ -27,11 +27,13 @@ Application Examples
 Two reference examples are available in ESP-IDF:
 
 - MQTT over TLS (certificate bundle): ``examples/protocols/mqtt``
+
   - Validates the broker with ESP-IDF's certificate bundle (default).
   - Default broker URI targets ``mqtts://test.mosquitto.org:8886`` (Let's Encrypt chain).
   - Alternative configuration pins Mosquitto CA and uses ``mqtts://test.mosquitto.org:8883``.
 
 - MQTT 5.0 over TLS (certificate bundle): ``examples/protocols/mqtt5``
+
   - Uses MQTT v5.0 with TLS and validation via the certificate bundle.
   - Default broker URI targets ``mqtts://test.mosquitto.org:8886``.
 

docs/en/migration-guides/release-6.x/6.0/protocols.rst

@@ -112,10 +112,12 @@ ESP-MQTT
 Breaking change: ESP-MQTT moved to a managed component and example set updated.
 
 - The ESP-MQTT component has been removed from ESP-IDF and is now a managed component: ``espressif/mqtt``.
+
   - To add the component to an application, run ``idf.py add-dependency espressif/mqtt``.
   - Include headers and APIs remain the same (``mqtt_client.h``), but the component is fetched via the Component Manager.
 
 - Example changes in ESP-IDF:
+
   - Legacy MQTT TLS examples under ``examples/protocols/mqtt/ssl*`` were removed.
   - New reference examples are available: