Fix hyperlink to redirect to memory section of requirements
Change text "recommend at least 4GB of free memory" on https://about.gitlab.com/installation/ to redirect to memory section of requirements instead of CPU.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Change text "recommend at least 4GB of free memory" on https://about.gitlab.com/installation/ to redirect to memory section of requirements instead of CPU.