Update docs/display22/3d-drucker.md, docs/display22/Ender3Pro/uebersicht.md files
Deleted docs/display22/Ultimaker S3/.gitkeep, docs/display22/Ultimaker S3/uebersicht files
Deleted docs/display22/Ultimaker S3/.gitkeep, docs/display22/Ultimaker S3/uebersicht files