MAPG-199 fix issues found by PHPStan

src/Response/Redirect.php

@@ -16,7 +16,7 @@ class Redirect implements IRedirect
 
     public function getUrl(): string
     {
-        if (preg_match('/^http(s)?/', $this->target)) {
+        if (preg_match('/^http(s)?/', $this->target) === 1) {
             $link = $this->target;
         } else {
             $link = \Container::$request->getBase() . '/' . $this->target;