docs(multi-factor-auth): fix typo

[katayama8000]

Description

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• I read the Contributor Guide and followed the process outlined there for submitting PRs.
  • Yes
• My change supports the following platforms;
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  • iOS
• My change includes tests;
  • e2e tests added or updated in packages/\*\*/e2e
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• I have updated TypeScript types that are affected by my change.
• This is a breaking change;
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Name	Status	Preview	Comments	Updated (UTC)
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[mikehardy]

Thank you very much for catching this! It's missing the CLA signing and for a change this small + obviously correct it's easier to just reimplement quickly and push it through myself so I get the change in quickly while I have time - I'm going to merge #7164 with the same change supercedingthis one. Cheers!