Override max Pages size limit for the gitlab-docs-archives project

Similar to https://gitlab.com/gitlab-com/gl-infra/reliability/-/issues/9019, we'd like to change the quota for artifacts and Pages to 15GB.

1. As an admin, go to https://gitlab.com/gitlab-org/gitlab-docs-archives/pages and update the maximum Pages size to 15000MB.
2. As an admin, go to https://gitlab.com/gitlab-org/gitlab-docs-archives/-/settings/ci_cd in General pipelines and update the maximum artifacts size to 15000MB.