Update sign-in-options.md

Fix Policheck bug https://dev.azure.com/msft-skilling/learn-platform-policheck/_workitems/edit/299069

Only changing one of two because the other is UI.

Author: v-thepet

articles/active-directory-b2c/sign-in-options.md

@@ -44,7 +44,7 @@ Your local account identity provider includes a Username option that lets users
 
 Phone sign-in is a passwordless option in your local account identity provider settings. This method lets users sign up for your app using a phone number as their primary identifier. One-time passwords are sent to your users via SMS text messages. Users will have the following experience during sign-up and sign-in:
 
-- **Sign-in**: If the user has an existing account with phone number as their identifier, the user enters their phone number and selects *Sign in*. They confirm the country and phone number by selecting *Continue*, and a one-time verification code is sent to their phone. The user enters the verification code and selects *Continue* to sign in.
+- **Sign-in**: If the user has an existing account with phone number as their identifier, the user enters their phone number and selects *Sign in*. They confirm the country/region and phone number by selecting *Continue*, and a one-time verification code is sent to their phone. The user enters the verification code and selects *Continue* to sign in.
 - **Sign-up**: If the user doesn't already have an account for your application, they can create one by clicking on the *Sign up now* link.
     1. A sign-up page appears, where the user selects their *Country*, enters their phone number, and selects *Send Code*. 
     1. A one-time verification code is sent to the user's phone number. The user enters the *Verification Code* on the sign-up page, and then selects *Verify Code*. (If the user can't retrieve the code, they can select *Send New Code*).