Remove type=module from no-modules example

We're not using ES modules, so use just a normal script!

Closes rustwasm#2182

examples/without-a-bundler-no-modules/index.html

@@ -6,7 +6,7 @@
     <!-- Include the JS generated by `wasm-pack build` -->
     <script src='pkg/without_a_bundler_no_modules.js'></script>
 
-    <script type=module>
+    <script>
       // Like with the `--target web` output the exports are immediately
       // available but they won't work until we initialize the module. Unlike
       // `--target web`, however, the globals are all stored on a