Link to update page.

README.md

@@ -74,7 +74,7 @@ Since 2011 a minor or major version of GitLab is released on the 22nd of every m
 ## Upgrading
-For updating the Omnibus installation please see the [update documentation](https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/doc/update.md). For installations from source there is an [upgrader script](doc/update/upgrader.md) and there are [upgrade guides](doc/update) detailing all necessary commands to migrate to the next version.
+For upgrading information please see our [update page](https://about.gitlab.com/update/).
 ## Install a development environment
@@ -101,4 +101,4 @@ Please see [Getting help for GitLab](https://about.gitlab.com/getting-help/) on
 ## Is it awesome?
 Thanks for [asking this question](https://twitter.com/supersloth/status/489462789384056832) Joshua.
-[These people](https://twitter.com/gitlab/favorites) seem to like it.
+[These people](https://twitter.com/gitlab/favorites) seem to like it.
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