fix CI

Author: wqx6

docs/examples/index.md

@@ -370,3 +370,12 @@ network-manager-app/README
 
 lit-icd-app/**/README
 ```
+
+## Thread Border Router example
+
+```{toctree}
+:glob:
+:maxdepth: 1
+
+thread-br-app/**/README
+```

docs/guides/darwin.md

@@ -256,7 +256,6 @@ Example:
 -   [ESP32 All Clusters](/examples/all-clusters-app/esp32/README.md)
 -   [ESP32 Lighting](/examples/lighting-app/esp32/README.md)
 -   [ESP32 Temperature Sensor](/examples/temperature-measurement-app/esp32/README.md)
--   [ESP32 Thread Border Router](/examples/thread-br-app/esp32/README.md)
 -   [mbedOS](/examples/all-clusters-app/mbed/README.md)
 -   [nRF Connect All Clusters](./nrfconnect_examples_configuration.md)
 -   [nRF Connect Pump](/examples/pump-app/nrfconnect/README.md)