Make ESP32 Bluetooth stack architecture Doc only visible for ESP32

docs/en/api-reference/bluetooth/index.rst

@@ -18,11 +18,12 @@ ESP-IDF currently supports two host stacks. The Bluedroid based stack (default)
 * For usecases involving classic Bluetooth as well as BLE, Bluedroid should be used.
 * For BLE-only usecases, using NimBLE is recommended. It is less demanding in terms of code footprint and runtime memory, making it suitable for such scenarios.
 
+.. only:: esp32
 
-For the overview of the ESP32 Bluetooth stack architecture, follow the links below:
+    For the overview of the ESP32 Bluetooth stack architecture, follow the links below:
 
-* `ESP32 Bluetooth Architecture (PDF) [English] <http://espressif.com/sites/default/files/documentation/esp32_bluetooth_architecture_en.pdf>`_
-* `ESP32 Bluetooth Architecture (PDF) [中文] <http://espressif.com/sites/default/files/documentation/esp32_bluetooth_architecture_cn.pdf>`_
+       * `ESP32 Bluetooth Architecture (PDF) [English] <http://espressif.com/sites/default/files/documentation/esp32_bluetooth_architecture_en.pdf>`_
+       * `ESP32 Bluetooth Architecture (PDF) [中文] <http://espressif.com/sites/default/files/documentation/esp32_bluetooth_architecture_cn.pdf>`_
 
 Code examples for this API section are provided in the :example:`bluetooth/bluedroid` directory of ESP-IDF examples.
 

docs/zh_CN/api-reference/bluetooth/index.rst

@@ -13,9 +13,11 @@
    NimBLE <nimble/index>
    ESP-BLE-MESH <esp-ble-mesh>
 
-请点击下方链接，查看 ESP32 蓝牙架构：
+.. only:: esp32
 
-`ESP32 蓝牙架构 (PDF) <http://espressif.com/sites/default/files/documentation/esp32_bluetooth_architecture_cn.pdf>`_
+   请点击下方链接，查看 ESP32 蓝牙架构：
+
+   `ESP32 蓝牙架构 (PDF) <http://espressif.com/sites/default/files/documentation/esp32_bluetooth_architecture_cn.pdf>`_
 
 蓝牙 API 的示例代码存放于 ESP-IDF :example:`bluetooth/bluedroid` 示例目录下，请查看。