将以下代码放到Planet的markdown文本下方
----
<script src="https://giscus.app/client.js"
data-repo="urkbio/giscus"
data-repo-id="R_kgDONv0EQg"
data-category="Announcements"
data-category-id="DIC_kwDONv0EQs4CmW3b"
data-mapping="pathname"
data-strict="0"
data-reactions-enabled="1"
data-emit-metadata="0"
data-input-position="bottom"
data-theme="preferred_color_scheme"
data-lang="zh-CN"
crossorigin="anonymous"
async>
</script>