docs: update

docs/guide/markdown.md

@@ -566,7 +566,12 @@ It also supports [line highlighting](#line-highlighting-in-code-blocks):
 <<< @/snippets/snippet.js{2}
 
 ::: tip
-The value of `@` corresponds to the source root. By default it's the VitePress project root, unless `srcDir` is configured.
+The value of `@` corresponds to the source root. By default it's the VitePress project root, unless `srcDir` is configured. Alternatively, you can also import from relative paths:
+
+```md
+<<< ../snippets/snippet.js
+```
+
 :::
 
 You can also use a [VS Code region](https://code.visualstudio.com/docs/editor/codebasics#_folding) to only include the corresponding part of the code file. You can provide a custom region name after a `#` following the filepath: