docs: clarify Microsoft Entra ID is Azure AD in identity provider docs

Co-authored-by: Michael Sukkarieh <msukkari@users.noreply.github.com>

Author: cursoragent

docs/docs/configuration/idp.mdx

@@ -418,12 +418,16 @@ A Keycloak connection can be used for [authentication](/docs/configuration/auth)
 </Steps>
 </Accordion>
 
-### Microsoft Entra ID
+### Microsoft Entra ID (Azure AD)
 
 [Auth.js Microsoft Entra ID Provider Docs](https://authjs.dev/getting-started/providers/microsoft-entra-id)
 
 A Microsoft Entra ID connection can be used for [authentication](/docs/configuration/auth).
 
+<Info>
+Microsoft renamed Azure Active Directory (Azure AD) to Microsoft Entra ID in 2023. If you have an existing Azure AD setup, these instructions will work for you. The underlying authentication infrastructure is the same.
+</Info>
+
 <Accordion title="instructions">
 <Steps>
     <Step title="Register an OAuth Application">