I18N: Move code out of a translatable string in register_rest_route().

To simplify the string and exclude any parts that don't require translation, `$args` can be moved out of the string and added as a placeholder.

Follow-up to [54339].

See #51986.

git-svn-id: https://develop.svn.wordpress.org/trunk@54346 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

src/wp-includes/rest-api.php

@@ -108,8 +108,9 @@ function register_rest_route( $namespace, $route, $args = array(), $override = f
 			_doing_it_wrong(
 				__FUNCTION__,
 				sprintf(
-				/* translators: %s: The REST API route being registered. */
-					__( 'REST API $args should be an array of arrays. Non-array value detected for %s.' ),
+					/* translators: 1: $args, 2: The REST API route being registered. */
+					__( 'REST API %1$s should be an array of arrays. Non-array value detected for %2$s.' ),
+					'<code>$args</code>',
 					'<code>' . $clean_namespace . '/' . trim( $route, '/' ) . '</code>'
 				),
 				'6.1.0'