Fix renderer option "language" cannot be an array

Signed-off-by: Jack Cherng <[email protected]>

Author: jfcherng

src/Renderer/AbstractRenderer.php

@@ -133,12 +133,12 @@ abstract protected function renderWoker(Differ $differ): string;
     /**
      * Update the Language object.
      *
-     * @param string $old the old language
-     * @param string $new the new language
+     * @param string|string[] $old the old language
+     * @param string|string[] $new the new language
      *
      * @return self
      */
-    protected function updateLanguage(string $old, string $new): self
+    protected function updateLanguage($old, $new): self
     {
         if (!isset($this->t) || $old !== $new) {
             $this->t = new Language($new);