chore: Update script tag in readme files to use type="module" for bet…

[TBXark]

最近发现之前写的网页加载js失败了，查看后发现新编译的MindElixir.js直接 html 通过 <script>标签引入会报错 Uncaught SyntaxError: export declarations may only appear at top level of a module

下面是我修改后的代码

<script type="module" src="https://cdn.jsdelivr.net/npm/mind-elixir/dist/MindElixir.js"></script>
<script type="module">
import MindElixir from "https://cdn.jsdelivr.net/npm/mind-elixir/dist/MindElixir.js";
// ...
</script>