docs: Use relative link to other README files

[hasecilu]

Current README on develop gives 404 error when clicking Spanish link.

[JYC333]

I think that because we are pointing to master branch README, and now Spanish README doesn't merge into master yet. Using relative link might be a better way.

And I also think put the README files in repo root is not so clean, maybe move other languages' README files into .github? See some repos doing like this. What's your thought @eliandoran?

[perfectra1n]

I feel like .github/ is reserved explicitly for GitHub-related functionality (such as GitHub Actions). Since docs/ is already being used, perhaps a folder such as readme/ might be a better choice? I'm not completely against .github/ however.

Yes, doing the relative links is a great option, thanks for bringing that up. The only downside is for sites like DockerHub that ask for a README, I'll have to remember to change from relative links to absolute...

[perfectra1n]

Another example of something similar - Immich uses a folder called readme_i18n/ to hold the README.md files for other languages.

[hasecilu]

Another example of something similar - Immich uses a folder called readme_i18n/ to hold the README.md files for other languages.

lgtm