Update overview.mdx

Added callout regarding visibility

Author: toobagrrl

src/content/docs/agentic-ai/knowledge-integration/overview.mdx

@@ -25,6 +25,10 @@ With New Relic AI Knowledge connector, you can integrate your enterprise knowled
 - Get actionable recommendations tailored to your environment.
 - Answer critical questions like, who resolved similar issues in the past? Or what are the triage steps for this issue?
 
+<Callout variant={Callout.VARIANT.IMPORTANT} title={null}>
+  All indexed documents are visible to all users within your organization.  Make sure the documents you index comply with your internal policies for use of the Services.
+</Callout>
+
 ## Prerequisites
 
 - Ensure that you have enabled [New Relic AI](/docs/agentic-ai/new-relic-ai/#enable).