UpdateProduct analytics file to state current status GA (index.md)

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/150546



Merged-by: Lorena Ciutacu <lciutacu@gitlab.com>
Reviewed-by: Lorena Ciutacu <lciutacu@gitlab.com>
Co-authored-by: Lindsy Farina <lfarina@gitlab.com>