Merge pull request #404 from arangodb/documentation/fix-typos

Fix typos

Author: Lars Maier

docs/design/acceptance_test.md

@@ -10,8 +10,8 @@ Before the test, record the following parameters for the platform the test is ex
 
 - Name of the platform
 - Version of the platform
-- Upstream Kubernetes version used by the platform (run `kubctrl version`)
-- Number of nodes used by the Kubernetes cluster (run `kubectrl get node`)
+- Upstream Kubernetes version used by the platform (run `kubectl version`)
+- Number of nodes used by the Kubernetes cluster (run `kubectl get node`)
 - `StorageClasses` provided by the platform (run `kubectl get storageclass`)
 - Does the platform use RBAC? (run `kubectl describe clusterrolebinding`)
 - Does the platform support services of type `LoadBalancer`?