fixup old gitlab URLs

Almost all of them were getting redirected correctly, but why keep the
old ones.  Also update a couple nitpicks directly around.
6 jobs from docker-repo-url in 17 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
canceled #72845
docker linux amd64
build:linux:amd64

passed #24801
docker linux amd64
build:linux:amd64

00:00:25

 
  Test
canceled #73120
docker linux amd64
deckard:linux:amd64

canceled #24804
docker linux amd64 allowed to fail
respdiff:linux:amd64

00:00:02

passed #24802
docker linux amd64
test:linux:amd64

00:00:17

passed #24803
docker linux amd64
deckard:linux:amd64

00:00:20