libs/module: Support LoRa868v2, 470, 915.

Signed-off-by: icyqwq <[email protected]>

Author: icyqwq

docs/en/module/index.rst

@@ -11,7 +11,7 @@ Module
     grbl.rst
     hmi.rst
     lora.rst
-    lorawan.rst
+    lorawan868.rst
     plus.rst
     pps.rst
     rca.rst