Address PR comments for OAuth Scopes

astro/src/content/docs/lifecycle/authenticate-users/oauth/scopes.mdx

@@ -96,6 +96,11 @@ The `openid` scope is used to request identity information according to the [Ope
 The `offline_access` scope is used to request a refresh token on the authorization response.
 Its behavior is controlled by the <InlineField>Generate refresh tokens</InlineField> and <InlineField>Enabled grants</InlineField> configurations on the application [OAuth tab](/docs/get-started/core-concepts/applications#oauth).
 
+### Reserved Prefixes
+
+FusionAuth reserves the prefixes `idp-link:`, `source-entity:`, and `target-entity:`.
+Scope names starting with these prefixes cannot be used when defining [custom scopes](/docs/get-started/core-concepts/scopes).
+
 ## Consent Mode
 
 <AdvancedEditionBlurb />