Auto-convert links between spec MD files to be internal links

In "normal" Markdown, when you create a link across different MD files, you reference the file and the internal link within the file, such as: `[link to another spec file](other_spec.md#header-in-that-other-file)`. However, since spec-up merges the files together. Would it be possible to automatically convert the link in the generated spec to remove the file reference? E.g. convert the example above to `[link to another spec file](#header-in-that-other-file)`.

I can see that there would be limits on that -- e.g. rules for when/when not to do the conversion for any given link. I would think a relative reference (no leading "/" on the file name, or perhaps no "/" at all in the file name segment).