Heading Anchors
Add anchor links to headings in the content.
The Heading Anchors extension generates anchor links for all headings in the content and adds them as clickable '#' symbols to the headings.
Content like this:
content/example.md
## Example Subheading
Will be rendered as:

Clicking on the '#' symbol will navigate to /example#example-subheading, which is the anchor link for the heading.
Usage
To use the HeadingAnchorsExtension, add it to the extensions list of the ContentApp component:
ContentApp(
...
extensions: [
HeadingAnchorsExtension(),
],
);
The extension takes the following properties to customize the behavior:
maxHeaderDepthintThe maximum header depth to generate anchors for. Defaults to 3.

