USB image: adjust documentation

This is just a placeholder ticket.

Feature Branch: doc/16006-usb-images

Parent Task: #15292 (closed)

Subtasks

• #15660 (closed)
• #16007 (closed)
• #16163 (closed)
• #16205 (closed)

Related issues

• Related to #16408 (closed)

Original created by @u on 16006 (Redmine)