Add additional info to network settings

tools/include/markdown/NE002-footer.md

@@ -0,0 +1,23 @@
+=== "Wired device check"
+
+    In order to configure your network devices, they need to be supported the kernel.
+
+    To verify, use command:
+
+    ```sh
+    ip addr
+    ```
+
+    It is usually something like eth0, enp4s3 or lan.
+
+=== "Wireless device check"
+
+    In order to configure your wireless network devices, they need to be supported the kernel.
+
+    To verify, use command:
+
+    ```sh
+    iw dev | awk '$1=="Interface"{print $2}'
+    ```
+
+    It is usually something like `wlan0`, `wlo1` or `wlx12334c47dec3`. If you get blank response, it means your WiFi device / dongle is not supported by the kernel.