fix: Add missing authExtern parameter to RecaptchaVerifier examples

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🦋 Changeset detected

Latest commit: ec2f614

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
@firebase/auth	Patch
firebase	Patch
@firebase/auth-compat	Patch

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[gemini-code-assist]

Code Review

This pull request updates documentation and JSDoc examples to ensure the RecaptchaVerifier constructor is called with the required auth parameter. These changes span across multiple documentation files and source code comments to maintain consistency with the current API. I have no feedback to provide as there were no review comments to evaluate.