external links to anchor in another markdown file in same repository

[golharam]

I have a README.md that contains a link to another markdown file within the same repo:

[Link to other file](OTHER_FILE.md)

The OTHER_FILE.md is part of the same repo. I've added a confluence-page-id, confluence-space-key tag to the top of that markdown and already published it to Confluence. Now, when I try to publish my README.md, I get the error: m2conf.converter.DocumentError: unable to find matching page for URL: OTHER_FILE.md

How do you handle links like this?