Maybe some problems caused by the update

[WhyLIM]

Describe the bug

Previously I was using the following CDN：

<!-- CDN files for docsify-katex -->
<script src="//cdn.jsdelivr.net/npm/docsify-katex@latest/dist/docsify-katex.js"></script>
<link rel="stylesheet" href="//cdn.jsdelivr.net/npm/katex@latest/dist/katex.min.css"/>

But just recently, I found that the formula rendering was invalid. After replacing the current CDN file, I found that the support for the mhchem package was lost.

current CDN:

<script src="https://cdn.jsdelivr.net/npm/katex@latest/dist/katex.min.js"></script>
<link rel="stylesheet" href="//cdn.jsdelivr.net/npm/katex@latest/dist/katex.min.css" />
<script src="https://cdn.jsdelivr.net/npm/marked@3"></script>
<!-- CDN files for docsify-katex -->
<script src="//cdn.jsdelivr.net/npm/docsify-katex@latest/dist/docsify-katex.js"></script>

To Reproduce
Steps to reproduce the behavior:

1. A website for demos of mhchem: https://docs.moodle.org/400/en/Chemistry_notation_using_mhchem
2. You can use demos in the website above to test
3. A complex demo of my own :

$$\ce{葡萄糖-6-磷酸 ->[\color{#F65353}{葡萄糖-6-磷酸脱氢酶}、\color{#58B1FF}{Mg^{2+}}][\color{#7EC636}{NADP+\ \nearrow \quad \searrow\ NADPH + H+}] 葡萄糖-6-膦酸内酯}$$

Expected behavior
My demo should be like:

Screenshots
The current version renders as:

Desktop (please complete the following information):

• OS: Windows 11 Pro 21H2
• Browser version: Chrome 105.0.1343.33
• docsify version: latest
• docsify-katex version: latest

Additional context
Add any other context about the problem here.

[upupming]

After the update, you should include the mhchem extension manually using an extra script, see: https://github.com/KaTeX/KaTeX/blob/main/contrib/mhchem/README.md

<script defer src="https://cdn.jsdelivr.net/npm/[email protected]/dist/contrib/mhchem.min.js" integrity="sha384-RTN08a0AXIioPBcVosEqPUfKK+rPp+h1x/izR7xMkdMyuwkcZCWdxO+RSwIFtJXN"  crossorigin="anonymous"></script>