Docs: In various @return tags, list the expected type first, instead of false.

Follow-up to [46696].

See #48303.

git-svn-id: https://develop.svn.wordpress.org/trunk@47060 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/http.php

@@ -513,7 +513,7 @@ function send_origin_headers() {
  * @since 3.5.2
  *
  * @param string $url Request URL.
- * @return false|string URL or false on failure.
+ * @return string|false URL or false on failure.
  */
 function wp_http_validate_url( $url ) {
 	$original_url = $url;