docs: fix ktx docs urls for firebaseopensource.com

[thatfiredev]

Previous behavior:

Clicking on the "firebase-common" or the "firebase-firestore" links from the firebase-android-sdk page would redirect the user to GitHub to be able to see these pages.

New behavior:

Now, clicking on these links shows the respective pages, but still inside firebaseopensource.com (not redirecting to GitHub).

[google-oss-bot]

Hi @rosariopfernandes. Thanks for your PR.

I'm waiting for a firebase member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[vkryachko]

/assign @samtstern

[samtstern]

Thanks for this! It was.on my TODO list but you beat me to it.

[thatfiredev]

@samtstern Now the links are redirecting to GitHub, but with a 404. Maybe we should use "docs/ktx/common.md" to match the page specified on our project.json?

[samtstern]

@rosariopfernandes I will have to take a look at this, thanks for trying though! I'll send a PR when I figure it out, it may be a bug in the open source site's relative link parser.

[samtstern]

This should be fixed by:
firebase/firebaseopensource.com@9fe7744

I will roll out the change.