Update MfaBeginEnrollOptions.mdx

[BcnCarlos]

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Description

Update ACUL JS SDK MFA Pages, added images, code samples and edited layout.

Update MfaBeginEnrollOptions.mdx
Update MfaDetectBrowserCapabilities.mdx
Update MfaEmailList.mdx
Update MfaEmailChallenge.mdx
Update MfaCountryCodes.mdx
Update MfaEnrollResult.mdx
Update MfaLoginOptions.mdx
Update MfaOtpChallenge.mdx
Update MfaOtpEnrollmentCode.mdx
Update MfaOtpEnrollmentQr.mdx
Update MfaPhoneChallenge.mdx
Update MfaPhoneEnrollment.mdx
Update MfaPushChallengePush.mdx
Update MfaPushEnrollmentQr.mdx
Update MfaPushList.mdx
Update MfaPushWelcome.mdx
Update MfaRecoveryCodeChallenge.mdx
Update MfaRecoveryCodeChallengeNewCode.mdx
Update MfaRecoveryCodeEnrollment.mdx
Update MfaSmsChallenge.mdx
Update MfaSmsEnrollment.mdx
Update MfaSmsList.mdx
Update MfaVoiceChallenge.mdx
Update MfaVoiceEnrollment.mdx
Update MfaWebAuthnChangeKeyNickname.mdx
Update MfaWebAuthnEnrollmentSuccess.mdx
Update MfaWebAuthnError.mdx
Update MfaWebAuthnNotAvailableError.mdx
Update MfaWebAuthnPlatformChallenge.mdx
Update MfaWebAuthnPlatformEnrollment.mdx
Update MfaWebAuthnRoamingChallenge.mdx
Update MfaWebAuthnRoamingEnrollment.mdx

References

Include any links supporting this change such as a:

• GitHub Issue/PR number addressed or fixed
• Auth0 Community post
• StackOverflow post
• Support forum thread
• Related pull requests/issues from other repos

If there are no references, simply delete this section.

Testing

Describe how this can be tested by reviewers. Be specific about anything not tested and reasons why. If this library has unit and/or integration testing, tests should be added for new functionality and existing tests should complete without errors.

Please include any manual steps for testing end-to-end or functionality not covered by unit/integration tests.

Also include details of the environment this PR was developed in (language/platform/browser version).

• This change adds test coverage for new/changed/fixed functionality

Checklist

• I have added documentation for new/changed functionality in this PR or in auth0.com/docs
• All active GitHub checks for tests, formatting, and security are passing
• The correct base branch is being used, if not the default branch