fix meta tag

charset and the name attributes cannot be in the same meta tag

Author: RaihanSharif

debugging/book-library/index.html

@@ -9,6 +9,8 @@
       rel="stylesheet"
       href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"
     />
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <link rel="stylesheet" type="text/css" href="style.css" />
     <script type="module" src="script.js"></script>
   </head>