fix(docs): fix broken link

Author: olalonde

src/managing-workflow/tuning-component-settings.md

@@ -64,7 +64,7 @@ Setting                                         | Description
 DEIS_DEPLOY_BATCHES                             | the number of pods to bring up and take down sequentially during a scale (default: number of available nodes)
 DEIS_DEPLOY_TIMEOUT                             | deploy timeout in seconds per deploy batch (default: 120)
 IMAGE_PULL_POLICY                               | the kubernetes [image pull policy][pull-policy] for application images (default: "IfNotPresent") (allowed values: "Always", "IfNotPresent")
-KUBERNETES_DEPLOYMENTS_REVISION_HISTORY_LIMIT   | how many [revisions][[kubernetes-deployment-revision]] Kubernetes keeps around of a given Deployment (default: all revisions)
+KUBERNETES_DEPLOYMENTS_REVISION_HISTORY_LIMIT   | how many [revisions][kubernetes-deployment-revision] Kubernetes keeps around of a given Deployment (default: all revisions)
 KUBERNETES_POD_TERMINATION_GRACE_PERIOD_SECONDS | how many seconds kubernetes waits for a pod to finish work after a SIGTERM before sending SIGKILL (default: 30)
 
 See the [Deploying Apps][] guide for more detailed information on those.