Fixes broken link to values.yaml in Update gitlab_omnibus.md

Originally submitted at
https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6617.
Signed-off-by: Rémy Coutable <remy@rymai.me>

doc/install/kubernetes/gitlab_omnibus.md

@@ -101,7 +101,7 @@ Other common configuration options:
 - `provider`: Optimizes the deployment for a cloud provider. The default is `gke` for [Google Kubernetes Engine](https://cloud.google.com/kubernetes-engine/), with `acs` also supported for the [Azure Container Service](https://azure.microsoft.com/en-us/services/container-service/).
 
 For additional configuration options, consult the
-[`values.yaml`](https://gitlab.com/charts/charts.gitlab.io/blob/master/charts/gitlab-omnibus/values.yaml).
+[`values.yaml`](https://gitlab.com/charts/gitlab-omnibus/blob/master/values.yaml).
 
 ### Choosing a different GitLab release version