Fix IP address retrieval in server response (#23813)

### What does this PR do?
Fix, response example - requestIP return object.

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src="https://github.com/user-attachments/assets/14b90a8e-3230-4eb1-8f87-ee06392029cd"
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<img width="333" height="115" alt="image"
src="https://github.com/user-attachments/assets/ecf006b3-f02a-4bed-8b8c-b28b8ec2adc8"
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Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

docs/api/http.md

@@ -536,7 +536,7 @@ You can also access the `Server` object from the `fetch` handler. It's the secon
 const server = Bun.serve({
   fetch(req, server) {
     const ip = server.requestIP(req);
-    return new Response(`Your IP is ${ip}`);
+    return new Response(`Your IP is ${ip.address}`);
   },
 });
 ```