testing/mdbook: upgrade to 0.3.3

7 jobs for !906 with mdbook in 17 minutes and 10 seconds (queued for 1 second)
detached
Status Job ID Name Coverage
  Lint
passed lint #9556
docker-alpine x86_64

00:00:24

 
  Build
passed build-aarch64 #9561
docker-alpine ci-build aarch64

00:08:15

passed build-armv7 #9562
docker-alpine ci-build armv7

00:16:45

passed build-ppc64le #9560
docker-alpine ci-build ppc64le

00:09:25

passed build-s390x #9559
docker-alpine ci-build s390x

00:00:28

passed build-x86 #9558
docker-alpine ci-build x86

00:15:57

passed build-x86_64 #9557
docker-alpine ci-build x86_64

00:07:58