Update src/pages/[platform]/build-a-backend/auth/connect-your-frontend/sign-in/index.mdx

Co-authored-by: josef <[email protected]>

Author: calebpollman

src/pages/[platform]/build-a-backend/auth/connect-your-frontend/sign-in/index.mdx

@@ -814,7 +814,7 @@ To sign in using an external identity provider such as Google, use the `signInWi
 
 <Callout info>
 
-For guidance on configuring an external Identity Provider with Amplify see [External Identity Providers](https://docs.amplify.aws/react/build-a-backend/auth/concepts/external-identity-providers/)
+For guidance on configuring an external Identity Provider with Amplify see [External Identity Providers](/[platform]/build-a-backend/auth/concepts/external-identity-providers/)
 
 </Callout>