Fix broken link

source/posts/2017-08-08-gocd-elastic-agents-benefits.html.markdown.erb

@@ -45,7 +45,7 @@ We started using the elastic agents for [Docker plugin](https://github.com/gocd-
 
 Before elastic agents, if we wanted to test something new that needed different hardware or software, we needed to provision build machines, and have the relevant software installed on these agents. Then if we chose to not keep the change, we also had to decommission the machines. It was time consuming  to do all of that, and took the focus away from development.
 
-Using elastic agents, we can apply the idea behind [ImmutableServer](https://martinfowler.com/bliki/ImmutableServer.html) to our build machines. We now [build an operating system image](https://hub.docker.com/r/gocdcontrib/gocd-dev-build/builds/) with all the required software (with the versions we need). This allowed us to operate quickly, and experiment without the worry of managing hardware.
+Using elastic agents, we can apply the idea behind [ImmutableServer](https://martinfowler.com/bliki/ImmutableServer.html) to our build machines. We now [build an operating system image](https://hub.docker.com/r/gocddev/gocd-dev-build/tags) with all the required software (with the versions we need). This allowed us to operate quickly, and experiment without the worry of managing hardware.
 
 ### 2. Less pain and overhead
 
@@ -67,4 +67,4 @@ Depending on user demand and the popularity of the cloud providers among our use
 
 <div class='row'>
   <%= partial "partials/elasticagents" %>
-</div>
+</div>