Explain port needed to connect to self hosted API. (#263)

* Update quickstart.mdx

Explain that to connect to the API on a self-hosted system they need to use port 33073.

* Update quickstart.mdx

Co-authored-by: Maycon Santos <[email protected]>

---------

Co-authored-by: Maycon Santos <[email protected]>

Author: KingSteve032

src/pages/ipa/guides/quickstart.mdx

@@ -29,6 +29,8 @@ curl -X GET https://api.netbird.io/api/peers \
 
 </CodeGroup>
 
+NOTE: If you are self-hosting netbird, and used the advanced guide, you may need to use port 33073 with your management URL.
+
 <div className="not-prose">
   <Button
     href="/api/resources/peers"