Merge branch 'JonstonChan-ci-migration-consistent-job-name' into 'master'

Docs: use consistent job names in CI migration documentation

See merge request gitlab-org/gitlab!68915

doc/ci/migration/circleci.md

@@ -121,11 +121,11 @@ stages:
   - test
   - deploy
 
-job 1:
+job1:
   stage: build
   script: make build dependencies
 
-job 2:
+job2:
   stage: build
   script: make build artifacts