samples: net: openthread: create category in docs

Add higher-level category for OpenThread in docs to avoid orphaned sample documentation. Signed-off-by: Martin Jäger <martin@libre.solar>
YoeDistro · Jan 3, 2025 · 17cde7d · 17cde7d
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diff --git a/doc/connectivity/usb/device/usb_device.rst b/doc/connectivity/usb/device/usb_device.rst
@@ -170,7 +170,7 @@ CDC ACM UART as backend for a subsystem or application:
 * ``zephyr,bt-c2h-uart`` used in Bluetooth,
   for example see :zephyr:code-sample:`bluetooth_hci_uart`
 * ``zephyr,ot-uart`` used in OpenThread,
-  for example see :zephyr:code-sample:`coprocessor`
+  for example see :zephyr:code-sample:`openthread-coprocessor`
 * ``zephyr,shell-uart`` used by shell for serial backend,
   for example see :zephyr_file:`samples/subsys/shell/shell_module`
 * ``zephyr,uart-mcumgr`` used by :zephyr:code-sample:`smp-svr` sample

diff --git a/samples/net/openthread/README.rst b/samples/net/openthread/README.rst
@@ -0,0 +1,5 @@
+.. zephyr:code-sample-category:: openthread
+   :name: OpenThread
+   :show-listing:
+
+   These samples demonstrate various use cases for the Thread protocol and underlying IEEE 802.15.4.
diff --git a/samples/net/openthread/coprocessor/README.rst b/samples/net/openthread/coprocessor/README.rst
@@ -1,6 +1,4 @@
-:orphan:
-
-.. zephyr:code-sample:: coprocessor
+.. zephyr:code-sample:: openthread-coprocessor
    :name: OpenThread co-processor
    :relevant-api: openthread