Update src/content/docs/authenticate/authentication-methods/phone-authentication.mdx

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: clairekinde11

src/content/docs/authenticate/authentication-methods/phone-authentication.mdx

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-You can allow users to use SMS as their primary or secondary means of authentication. This is a passwordless method, where the user is sent a code via an SMS to verify them on sign in. SMS can also be included as secondary factor is you have [multi-factor identification](/authenticate/multi-factor-auth/about-multi-factor-authentication/) set up. 
+SMS can also be included as a secondary factor if you have [multi-factor authentication](/authenticate/multi-factor-auth/about-multi-factor-authentication/) set up. 
 
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