Fix the wrong field names with Gitlab source
Created by: LinuxSuRen
What type of PR is this? /kind bug /area devops
What this PR does / why we need it: fix serval inappropriate word expression
see the correct fields https://github.com/kubesphere/kubesphere/blob/8330e9eb7a7ae95f758596e23a765b9804bb4435/pkg/apis/devops/v1alpha3/pipeline_types.go#L147
Which issue(s) this PR fixes:
Special notes for reviewers:
Additional documentation, usage docs, etc.: