LQA for various pages

Step 1: What is changing in this MR?

• Enabled I18n for /get-help

Production	Review app (FR)	Review App (DE)	Review app (JP)
https://about.gitlab.com/install	https://3729-translation-update-for-install.about.gitlab-review.app/fr-fr/install/	https://3729-translation-update-for-install.about.gitlab-review.app/de-de/install/	https://3729-translation-update-for-install.about.gitlab-review.app/ja-jp/install/
https://about.gitlab.com/get-help	https://3729-translation-update-for-install.about.gitlab-review.app/fr-fr/get-help/	https://3729-translation-update-for-install.about.gitlab-review.app/de-de/get-help/	https://3729-translation-update-for-install.about.gitlab-review.app/ja-jp/get-help/
https://about.gitlab.com/software-faster/	https://3729-translation-update-for-install.about.gitlab-review.app/fr-fr/software-faster/	https://3729-translation-update-for-install.about.gitlab-review.app/de-de/software-faster/	https://3729-translation-update-for-install.about.gitlab-review.app/ja-jp/software-faster/
https://about.gitlab.com/free-trial/devsecops/	https://3729-translation-update-for-install.about.gitlab-review.app/fr-fr/free-trial/devsecops/	https://3729-translation-update-for-install.about.gitlab-review.app/de-de/free-trial/devsecops/	https://3729-translation-update-for-install.about.gitlab-review.app/ja-jp/free-trial/devsecops/
https://about.gitlab.com	https://3729-translation-update-for-install.about.gitlab-review.app/fr-fr/	https://3729-translation-update-for-install.about.gitlab-review.app/de-de/	https://3729-translation-update-for-install.about.gitlab-review.app/ja-jp/

Build Variables:

• Use Contentful Preview API

Closes #3729