Update Windows installation instruction to UUI 1.9.7.7

The version of UUI has a different layout for the “Format” option so we should at least update the screenshots.

Feature Branch: web/12499-uui-1.9.7.7

Original created by @sajolida on 12499 (Redmine)

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information