Fixes for PHPCS issues.

Closes #3481918

src/Controller/NavigationExtraToolsController.php

@@ -114,7 +114,7 @@ final class NavigationExtraToolsController extends ControllerBase {
    */
   public function flushJsCss() {
     $this->state()
-      ->set('system.css_js_query_string', base_convert((string)$this->datetimeTime->getCurrentTime(), 10, 36));
+      ->set('system.css_js_query_string', base_convert((string) $this->datetimeTime->getCurrentTime(), 10, 36));
     $this->messenger()->addMessage($this->t('CSS and JavaScript cache cleared.'));
     return new RedirectResponse($this->reloadPage());
   }