Fix: URL 정규식 수정 - URL 인코딩된 값 포함

src/main/resources/templates/index.html

@@ -1,5 +1,5 @@
 <script>
-    const VALIDATE_URL="^((http|https):\\/\\/)?([a-z0-9-]{2,}\\.[a-z]{2,}|([0-9]{1,3}\\.){3}[0-9]{1,3})[\\w.\\/가-힣\\-\\ ?=&:]*";
+    const VALIDATE_URL="^((http|https):\\/\\/)?([a-z0-9-]{2,}\\.[a-z]{2,}|([0-9]{1,3}\\.){3}[0-9]{1,3})[\\w.\\/가-힣\\-\\ ?=&:%0-9A-Fa-f]*";
 
     // DOM 객체(요소) 체이닝 생성 클래스
     class Element{