Add TOTP Apps Google Authenticator.

[taku333]

Google Authenticator was also able to perform 2FA.

Why:

Google Authenticator seems to be a major TOTP application, so I modified it.

What's being changed:

Add TOTP Apps Google Authenticator Link.

Check off the following:

• I have reviewed my changes in staging (look for "Automatically generated comment" and click Modified to view your latest changes).
• For content changes, I have completed the self-review checklist.

Writer impact (This section is for GitHub staff members only):

• This pull request impacts the contribution experience
  • I have added the 'writer impact' label
  • I have added a description and/or a video demo of the changes below (e.g. a "before and after video")

[github-actions]

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The table contains an overview of files in the content directory that have been changed in this pull request. It's provided to make it easy to review your changes on the staging site. Please note that changes to the data directory will not show up in this table.

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Content directory changes

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Source	Preview	Production	What Changed
content/authentication/securing-your-account-with-two-factor-authentication-2fa/configuring-two-factor-authentication.md	Modified	Original

[ramyaparimi]

@taku333
Thanks so much for opening a PR! I'll get this triaged for review ⚡

[lecoursen]

Thanks @taku333 for your interest in our docs! We don't accept open source contributions to this list, which is instead maintained by our security team, so I'm closing this PR. Thanks again!