Issue #2532618 by TR: "return" used instead of "@return" in documentation

core/lib/Drupal/Component/PhpStorage/MTimeProtectedFileStorage.php

@@ -58,7 +58,8 @@ public function exists($name) {
    *
    * @param string $name
    *   The virtual file name. Can be a relative path.
-   * return string
+   *
+   * @return string|false
    *   The full path where the file is if it is valid, FALSE otherwise.
    */
   protected function checkFile($name) {