docs: favicon for reference site, new custom subdomain for reference site

[mikehardy]

Description

Take advantage of the new https://reference.rnfirebase.io subdomain, and prettify the typedoc just a tiny bit with a favicon

Related issues

None filed, but it is a follow-on for all the documentation work PRs and issues...

Release Summary

No software release, but a publish of the typedoc will be required after this for it to take effect

--> https://github.com/invertase/react-native-firebase/actions/workflows/deploy-api-reference.yml

Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
  • Yes
• My change supports the following platforms;
  • Android
  • iOS
  • Other (macOS, web)
• My change includes tests;
  • e2e tests added or updated in packages/\*\*/e2e
  • jest tests added or updated in packages/\*\*/__tests__
• I have updated TypeScript types that are affected by my change.
• This is a breaking change;
  • Yes
  • No

Test Plan

• Check favicon after Github Pages deploy (it did work locally after yarn reference:api)
• Check "reference" tab link on docs.pages after merge to main (it does look correct when looking at the branch preview: https://docs.page/invertase/react-native-firebase~docs-tweaks)

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Project	Deployment	Actions	Updated (UTC)
react-native-firebase	Error		Apr 17, 2026 1:20pm

[gemini-code-assist]

Code Review

This pull request updates the documentation reference URLs to use the new reference.rnfirebase.io domain in docs.json and the package.json build scripts. It also adds a favicon to the TypeDoc configuration. There are no review comments to address, and I have no further feedback to provide.