examples: update README for the openthread examples
@@ -15,6 +15,7 @@ The examples are grouped into subdirectories by category. Each category director
* `ethernet` Ethernet network examples.
* `get-started` Simple examples with minimal functionality. Good start point for beginners.
* `mesh` Wi-Fi Mesh examples.
+* `openthread` OpenThread examples.
* `peripherals` Examples showing driver functionality for the various onboard ESP32 peripherals.
* `protocols` Examples showing network protocol interactions.
* `provisioning` Wi-Fi provisioning examples.
