Update .github/copilot-instructions.md

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

Author: kmruiz

.github/copilot-instructions.md

@@ -60,7 +60,7 @@ through the Session.
 
 - The tool category MUST be `mongodb`.
 - They MUST call `this.ensureConnected()` before attempting to query MongoDB.
-- They MUST answer with content first secured by `formatUntrustedData`.
+- They MUST return content sanitized using `formatUntrustedData`.
 - Documents should be serialized with `EJSON.stringify`.
 - Ensure there are proper timeout mechanisms to avoid long-running queries that can affect the server.
 - Tools that require elicitation MUST implement `getConfirmationMessage` and provide an easy-to-understand message for a human running the operation.