Fix http api example (#1640)

## Change Summary

- The latest version of Axios returns the body in `response.data` so we
need to pull messages out of there.

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<!-- start pr-codex -->

---

## PR-Codex overview
This PR focuses on fixing a bug in the code related to accessing the
text of the first cast in the API response.

### Detailed summary
- Updated code to access the text of the first cast in the API response
by correcting the object path.

> ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your
question}`

<!-- end pr-codex -->

apps/hubble/www/docs/docs/httpapi/httpapi.md

@@ -27,7 +27,7 @@ try {
     const response = await axios.get(`${server}/v1/castsByFid?fid=${fid}`);
 
     console.log(`API Returned HTTP status ${response.status}`);    
-    console.log(`First Cast's text is ${response.messages[0].data.castAddBody.text}`);
+    console.log(`First Cast's text is ${response.data.messages[0].data.castAddBody.text}`);
 } catch (e) {
     // Handle errors
     console.log(response);