Support relative image paths in readmes from GitHub
Description
This package (at the time this ticket was created) uses relative paths to embed images from their Git repo into their readme:
https://www.forgebox.io/view/commandbox-cflint
An example image embed is:
Which Github resolves to
https://raw.githubusercontent.com/jsteinshouer/commandbox-cflint/master/examples/cflint-console-example.png
It looks like the markdown renderer we use supports setting a base URL for link resolution.
https://github.com/vsch/flexmark-java/wiki/Customizing-Docx-Rendering#image-embedding
We just need to check and see if their box.json has a GitHub repo set up and auto-create the base URL for their links. We can also see if BitBucket allows for this and what their base URL looks like.
