Write Guide for lockedDoor.md

[vaasut]

Write step by step guide with images explaining how to create a locked door

Description

The locked door FAQ section was a stub. Wrote a guide with images explaining how to create a locked door.

[vaasut]

The documentation page looks good in the preview, but when I try to commit it, the npm build crashes. I'm not sure what is causing the crash, and don't want to keep making tiny changes just guessing at what could be the problem.

[vaasut]

Came back after sleeping on it, and I was able to understand the problem. I just needed to close the img elements with "/>".

[le-doux]

this is a great addition to the docs - thank you @vaasut!