feat: custom n8n node

Author: nevo-david

pages/public-api.mdx

@@ -12,6 +12,8 @@ import {Callout} from 'nextra/components';
 ## For NodeJS users
 You can use the <a href="https://www.npmjs.com/package/@postiz/node" target="_blank">Postiz NodeJS SDK</a> to interact with the Postiz Public API.<br />
 
+For a custom n8n node check <a href="https://www.npmjs.com/package/@postiz/n8n" target="_blank">Postiz n8n custom node</a><br />
+
 ## Public API allows you to work with Postiz in headless mode
 
 To use the Public API, go to Postiz settings and copy the API Key.<br />