Fix Serial Module naming

portnums.proto

@@ -97,7 +97,7 @@ enum PortNum {
    * Connect to the RX/TX pins of a device with 38400 8N1. Packets received from the Meshtastic
    * network is forwarded to the RX pin while sending a packet to TX will go out to the Mesh network.
    * Maximum packet size of 240 bytes.
-   * Module is disabled by default can be turned on by setting SERIALMODULE_ENABLED = 1 in SerialPlugh.cpp.
+   * Module is disabled by default can be turned on by setting SERIAL_MODULE_ENABLED = 1 in SerialPlugh.cpp.
    */
   SERIAL_APP = 64;
 

radioconfig.proto

@@ -681,37 +681,37 @@ message RadioConfig {
      * Preferences for the SerialModule
      * FIXME - Move this out of UserPreferences and into a section for module configuration.
      */
-    bool serialmodule_enabled = 120;
+    bool serial_module_enabled = 120;
 
     /*
      * TODO: REPLACE
      */
-    bool serialmodule_echo = 121;
+    bool serial_module_echo = 121;
 
     /*
      * TODO: REPLACE
      */
-    uint32 serialmodule_rxd = 122;
+    uint32 serial_module_rxd = 122;
 
     /*
      * TODO: REPLACE
      */
-    uint32 serialmodule_txd = 123;
+    uint32 serial_module_txd = 123;
 
     /*
      * TODO: REPLACE
      */
-    uint32 serialmodule_baud = 176;
+    uint32 serial_module_baud = 176;
 
     /*
      * TODO: REPLACE
      */
-    uint32 serialmodule_timeout = 124;
+    uint32 serial_module_timeout = 124;
 
     /*
      * TODO: REPLACE
      */
-    uint32 serialmodule_mode = 125;
+    uint32 serial_module_mode = 125;
 
     /*
      * Preferences for the ExternalNotificationModule