Update Windows installation instruction to UUI 1.9.7.7

Originally created by @sajolida on #12499 (Redmine)

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

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