Ensure `environment` keyword is defined on all `deploy` jobs in documentation (batch 4)

See Ensure `environment` keyword is defined on all ... (&8590 - closed) for more details

Implementation guide

Make sure that all stage: deploy jobs in the following documentation files are already have environment: keyword.

If some of them don't, then add the

environment: production

(substitute production to other environmens like dev or staging where it makes more sense).

doc/ci/examples/laravel_with_gitlab_and_envoy/index.md
510:  stage: deploy

doc/ci/yaml/script.md
244:  stage: deploy
257:  stage: deploy

doc/ci/yaml/index.md
607:  stage: deploy
1479:  stage: deploy
1513:  stage: deploy
1543:  stage: deploy
1566:  stage: deploy
1610:  stage: deploy
1666:  stage: deploy
1727:  stage: deploy
2124:  stage: deploy
2383:  stage: deploy
2390:  stage: deploy
2664:  stage: deploy
2741:  stage: deploy
3725:  stage: deploy
3909:  stage: deploy
4049:  stage: deploy
4054:  stage: deploy
4147:  stage: deploy