docs: add note about compatibility with markdown-it-attrs (#93)

docs/packages/markdown-it.md

@@ -66,3 +66,7 @@ console.log('3') // highlighted
 console.log('4') // highlighted
 ```
 ````
+
+::: note
+If line highlighting is not working, it may be due to compatibility issues with the [markdown-it-attrs](https://github.com/arve0/markdown-it-attrs) plugin. The syntax of `markdown-it-attrs` uses the same curly brace (`{}`) syntax that this plugin uses, which causes line highlighting to not work. If you wish to continue using `markdown-it-attrs` alongside this plugin, consider [changing the delimiter/syntax](https://github.com/arve0/markdown-it-attrs#custom-delimiters) of `markdown-it-attrs` to use a different character, such as `%`.
+:::