RPC: no plurals in enums

Author: skotopes

applications/services/rpc/rpc_app_error_codes.h

@@ -8,4 +8,4 @@ typedef enum {
     RpcAppSystemErrorCodeParseFile, /** File parsing error, or wrong file structure, or missing required parameters. more accurate data can be obtained through the debug port */
     RpcAppSystemErrorCodeRegionLock, /** Requested function is blocked by regional settings */
     RpcAppSystemErrorCodeInternalParse, /** Error in protocol parameters description, or some data in opened file are unsupported */
-} RpcAppSystemErrorCodes;
+} RpcAppSystemErrorCode;