Edit the charts landing page to be cloud-native-related
Problem to solve
Now that the Operator is becoming GA, and users will have two ways to install GitLab in a cloud native way, we need to provide some general documentation.
Proposal
Edit the landing charts page https://gitlab.com/gitlab-org/charts/gitlab/blob/master/doc/index.md to be a generic one and mention the two cloud native ways to install GitLab.