- Add text domain to translation

- Use correct previx to error code

Author: nabsul

lib/class-wp-rest-oauth1.php

@@ -650,8 +650,8 @@ protected function check_oauth_signature( $consumer, $oauth_params, $token = nul
 				$params = wp_unslash( $_POST );
 				break;
 			default:
-				return new WP_Error( 'json_oauth1_unknown_http_method',
-					sprintf( __( 'Unknown http method: %s' ), $http_method ),
+				return new WP_Error( 'rest_oauth1_unknown_http_method',
+					sprintf( __( 'Unknown http method: %s', 'rest_oauth1' ), $http_method ),
 					array( 'status' => 401 ) );
 		}