Add Javascript code snippet to knowledge base page

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I would like to add a Javascript code snippet to the knowldedge Base page.
The intention is to add a form so that users may fill and send if they do not find a particular answer or topic in the knowledge base.

I am using Zammad version 6.5.1-1757685677.3b34f3d9.noble with Ubuntu 24.04.3 LTS Linux 6.8.0-79-generic on Proxmox.