Fix some 404 links into charts project

doc/install/kubernetes/preparation/tiller.md

@@ -7,7 +7,7 @@ Helm consists of two parts, the `helm` client and a `tiller` server inside Kuber
 
 NOTE: **Note:**
 If you are not able to run Tiller in your cluster, for example on OpenShift, it
-is possible to use [Tiller locally](https://gitlab.com/charts/gitlab/tree/master/doc/helm#local-tiller)
+is possible to use [Tiller locally](https://docs.gitlab.com/charts/installation/tools.html#local-tiller)
 and avoid deploying it into the cluster. This should only be used when Tiller
 cannot be normally deployed.
 

doc/install/openshift_and_gitlab/index.md

@@ -11,7 +11,7 @@ date: 2016-06-28
 CAUTION: **Deprecated:**
 This article is deprecated. Use the official Kubernetes Helm charts for
 installing GitLab to OpenShift. Check out the
-[official installation docs](https://gitlab.com/charts/gitlab/blob/master/doc/cloud/openshift.md)
+[official installation docs](https://docs.gitlab.com/charts/installation/cloud/openshift.html)
 for details.
 
 ## Introduction