fix: Updating social sign in attribute mappings callout on imported Auth (#5285)

* Updating social sign in attribute mappings callout on imported Auth

* adding callout to fragments/common

* Updating link

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

* Update text formatting to enable links

---------

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

Author: nadetastic

src/fragments/common/writable-vs-mutable-attributes.mdx

@@ -1,3 +1,8 @@
 <Callout warning={true}>
-For social sign-in, required attributes such as email will need to be both mutable on the User Pool as well as writable on the User Pool Client. [Learn more about mapping social sign-in provider attributes](https://docs.aws.amazon.com/cognito/latest/developerguide/cognito-user-pools-specifying-attribute-mapping.html#cognito-user-pools-specifying-attribute-mapping-requirements).
+
+  For social sign-in, required attributes such as email will need to be both
+  mutable on the User Pool as well as writable on the User Pool Client.
+  
+  [Learn more about mapping social sign-in provider attributes](https://docs.aws.amazon.com/cognito/latest/developerguide/cognito-user-pools-specifying-attribute-mapping.html#cognito-user-pools-specifying-attribute-mapping-requirements).
+
 </Callout>