firefox addon fix

src/res/hls.html

@@ -3,7 +3,7 @@
 <head>
     <title>m3u8</title>
     <link rel="stylesheet" href="/res/hls.css">
-    <script src="https://cdn.jsdelivr.net/npm/hls.js@latest"></script>
+    <script src="/ext/hls.js"></script>
 </head>
 <body>
 <video id="video"></video>

src/res/hls.ts

@@ -1,6 +1,6 @@
 function showMessage(message: string) {
     let messageElement = document.getElementById('message') as HTMLParagraphElement
-    messageElement.innerHTML = message
+    messageElement.innerText = message
     messageElement.hidden = false
     document.getElementById('video').hidden = true
 }