WASM REPL: fix loading xterm.js (broken in 2f1cee8)

Author: adqm

Tools/wasm/emscripten/web_example/python.html

@@ -4,7 +4,7 @@
         <meta charset="UTF-8" />
         <meta http-equiv="X-UA-Compatible" content="IE=edge" />
         <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-        <meta name="author" content="Katie Bell" />
+        <meta name="author" content="Katie Bell, Adam Hartz" />
         <meta name="description" content="Simple REPL for Python WASM" />
         <title>wasm-python terminal</title>
         <link
@@ -41,7 +41,7 @@
             src="https://unpkg.com/[email protected]/lib/xterm.js"
             crossorigin
             integrity="sha384-yYdNmem1ioP5Onm7RpXutin5A8TimLheLNQ6tnMi01/ZpxXdAwIm2t4fJMx1Djs+"
-        />
+        ></script>
         <script type="module">
             class WorkerManager {
                 constructor(