feat: fix link

Author: nevo-david

pages/public-api.mdx

@@ -10,7 +10,7 @@ import {Callout} from 'nextra/components';
 </Callout>
 
 ## For NodeJS users
-You can use the (Postiz NodeJS SDK)[https://www.npmjs.com/package/@postiz/node] to interact with the Postiz Public API.<br />
+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 />
 
 ## Public API allows you to work with Postiz in headless mode