chore: update mfa method language to include email

Author: jjarvisp

src/pages/[platform]/build-a-backend/auth/concepts/multi-factor-authentication/index.mdx

@@ -71,7 +71,7 @@ This configuration may change depending on the combination of MFA methods enable
 When enabling MFA you will have two key decisions to make:
 
 - **MFA enforcement:** As part of this setup you will determine how MFA is enforced. If you require MFA by setting MFA mode to `REQUIRED`, all your users will need to complete MFA to sign in. If you keep it `OPTIONAL`, your users will have the choice whether to enable MFA or not for their account.
-- **MFA methods:** You will also specify which MFA method you are using: TOTP (Time-based One-time Password), SMS (text message), email, or any combination thereof. We recommend that you use TOTP-based MFA as it is more secure and you can reserve SMS for account recovery.
+- **MFA methods:** You will also specify which MFA method you are using: TOTP (Time-based One-time Password), SMS (text message), email, or any combination thereof. We recommend that you use TOTP-based MFA as it is more secure and you can reserve SMS or email for account recovery.
 
 <Accordion title='Compare TOTP, SMS, and EMAIL MFA methods' headingLevel='4' eyebrow='Learn more'>