[Bug] Self-closing HTML tags break docs parser

[joshknowles]

Describe the Bug

Adding a self-closing HTML tag seems to break the docs parser.
For example, including the tag <br> without the / will cause the following error Failed to read docs configuration. Rendering last successful configuration.

Replacing this tag with <br/> works as expected.

Information to Reproduce

Add a <br> into one of your docs and try and run local doc server.

CLI Version

0.44.11

Actual Behavior

Server crashes with very little context as to why.

Expected Behavior

Few things that would be nice

1. Allow valid HTML5 self-closing tags
2. Catching this in fern check
3. Better errors