doc: Update README.md

Author: jaywcjlove

README.md

@@ -317,6 +317,7 @@ Code block passing parameters
 
 - [`rehype-video`](https://github.com/jaywcjlove/rehype-video) Add improved video syntax: links to `.mp4` and `.mov` turn into videos.
 - [`rehype-rewrite`](https://github.com/jaywcjlove/rehype-rewrite) Rewrite element with rehype.
+- [`rehype-ignore`](https://github.com/jaywcjlove/rehype-ignore) Ignore content display via HTML comments, Shown in GitHub readme, excluded in HTML.
 - [`rehypejs`](https://github.com/rehypejs/rehype) HTML processor powered by plugins part of the @unifiedjs collective
 - [`remark-parse`](https://www.npmjs.com/package/remark-parse) remark plugin to parse Markdown
 - [`remark-rehype`](https://www.npmjs.com/package/remark-rehype) remark plugin to transform to rehype