Update type

Author: muan

example/index.html

@@ -5,7 +5,7 @@
   <script src="./shadow-demo.js"></script>
   <!-- <script type="module" src="../dist/index.js"></script> -->
   <script type="module" src="https://unpkg.com/@github/details-dialog-element@latest"></script>
-  <script type="text/javascript" src="https://unpkg.com/@github/include-fragment-element@latest"></script>
+  <script type="module" src="https://unpkg.com/@github/include-fragment-element@latest"></script>
   <title>details-dialog-element demo</title>
   <link href="../src/index.css" rel="stylesheet">
   <link href="https://unpkg.com/primer@latest/build/build.css" rel="stylesheet">