message: Correct keyword for microsoftAuthApiRef
  Makes for a little less guesswork in the middle of things.
diff: @@ -48,6 +48,6 @@ The Microsoft provider is a structure with three configuration keys:
  ## Adding the provider to the Backstage frontend
  -To add the provider to the frontend, add the `microsoftAuthApi` reference and
  +To add the provider to the frontend, add the `microsoftAuthApiRef` reference and
  `SignInPage` component as shown in
  [Adding the provider to the sign-in page](../index.md#adding-the-provider-to-the-sign-in-page).
  