Docs: Correct the type for some method parameters in WP_REST_Server class.

Follow-up to [34928].

Props dilipbheda, mukesh27, kirasong, shailu25, khushdoms, welcher, audrasjb, SergeyBiryukov.
See #63249.

git-svn-id: https://develop.svn.wordpress.org/trunk@61113 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

src/wp-includes/rest-api/class-wp-rest-server.php

@@ -224,9 +224,9 @@ protected function error_to_response( $error ) {
 	 *
 	 * @since 4.4.0
 	 *
-	 * @param string $code    WP_Error-style code.
-	 * @param string $message Human-readable message.
-	 * @param int    $status  Optional. HTTP status code to send. Default null.
+	 * @param string   $code    WP_Error-style code.
+	 * @param string   $message Human-readable message.
+	 * @param int|null $status  Optional. HTTP status code to send. Default null.
 	 * @return string JSON representation of the error
 	 */
 	protected function json_error( $code, $message, $status = null ) {
@@ -278,8 +278,8 @@ protected function get_json_encode_options( WP_REST_Request $request ) {
 	 *
 	 * @global WP_User $current_user The currently authenticated user.
 	 *
-	 * @param string $path Optional. The request route. If not set, `$_SERVER['PATH_INFO']` will be used.
-	 *                     Default null.
+	 * @param string|null $path Optional. The request route. If not set, `$_SERVER['PATH_INFO']` will be used.
+	 *                          Default null.
 	 * @return null|false Null if not served and a HEAD request, false otherwise.
 	 */
 	public function serve_request( $path = null ) {