fixed numbering

Author: Justinha

articles/active-directory/authentication/concept-certificate-based-authentication-technical-deep-dive.md

@@ -77,8 +77,8 @@ Now we'll walk through each step:
 Azure AD CBA supports second factors to meet MFA requirements with single-factor certificates. Users can use either passwordless sign-in or FIDO2 security keys as second factors when the first factor is single-factor CBA. Users need to register passwordless sign-in or FIDO2 in advance to signing in with Azure AD CBA.
 For PSI to work, users should disable legacy notification through mobile app.
 
-1.	Sign in to the Azure portal.
-1.	Select **Azure Active Directory** > **Security** > **Multifactor authentication** > **Additional cloud-based multifactor authentication settings**.
+1. Sign in to the Azure portal.
+1. Select **Azure Active Directory** > **Security** > **Multifactor authentication** > **Additional cloud-based multifactor authentication settings**.
 
    :::image type="content" border="true" source="./media/concept-certificate-based-authentication-technical-deep-dive/configure.png" alt-text="Screenshot of how to configure multifactor authentication settings.":::