diff --git a/docs/eventing/samples/kubernetes-event-source/README.md b/docs/eventing/samples/kubernetes-event-source/README.md
index b634d32bffd..2a64e2cd9c2 100644
--- a/docs/eventing/samples/kubernetes-event-source/README.md
+++ b/docs/eventing/samples/kubernetes-event-source/README.md
@@ -1,5 +1,8 @@
 Kubernetes Event Source example shows how to wire kubernetes cluster events for
-consumption by a function that has been implemented as a Knative Service. The code for the following files can be found in the [/kubernetes-event-source/](https://github.com/knative/docs/tree/master/docs/eventing/samples/kubernetes-event-source) directory.
+consumption by a function that has been implemented as a Knative Service. The
+code for the following files can be found in the
+[/kubernetes-event-source/](https://github.com/knative/docs/tree/master/docs/eventing/samples/kubernetes-event-source)
+directory.
 
 ## Deployment Steps
 
@@ -23,9 +26,8 @@ kubectl label namespace default knative-eventing-injection=enabled
 
 1. Create a Service Account that the `ApiServerSource` runs as. The
    `ApiServerSource` watches for Kubernetes events and forwards them to the
-   Knative Eventing Broker. 
-   Create a file named `serviceaccount.yaml` and copy the code block 
-   below into it. 
+   Knative Eventing Broker. Create a file named `serviceaccount.yaml` and copy
+   the code block below into it.
 
 ```yaml
 apiVersion: v1
@@ -35,23 +37,21 @@ metadata:
   namespace: default
 
 ---
-
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRole
 metadata:
   name: event-watcher
 rules:
-- apiGroups:
-  - ""
-  resources:
-  - events
-  verbs:
-  - get
-  - list
-  - watch
+  - apiGroups:
+      - ""
+    resources:
+      - events
+    verbs:
+      - get
+      - list
+      - watch
 
 ---
-
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRoleBinding
 metadata:
@@ -61,14 +61,16 @@ roleRef:
   kind: ClusterRole
   name: event-watcher
 subjects:
-- kind: ServiceAccount
-  name: events-sa
-  namespace: default
+  - kind: ServiceAccount
+    name: events-sa
+    namespace: default
 ```
 
-If you want to re-use an existing Service Account with the appropriate permissions, you need to modify the `serviceaccount.yaml`.
+If you want to re-use an existing Service Account with the appropriate
+permissions, you need to modify the `serviceaccount.yaml`.
 
-Enter the following command to create the service account from `serviceaccount.yaml`:
+Enter the following command to create the service account from
+`serviceaccount.yaml`:
 
 ```shell
 kubectl apply --filename serviceaccount.yaml
@@ -77,7 +79,7 @@ kubectl apply --filename serviceaccount.yaml
 ### Create Event Source for Kubernetes Events
 
 1. In order to receive events, you have to create a concrete Event Source for a
-   specific namespace. Create a file named `k8s-events.yaml` and copy the code 
+   specific namespace. Create a file named `k8s-events.yaml` and copy the code
    block below into it.
 
 ```yaml
@@ -90,16 +92,16 @@ spec:
   serviceAccountName: events-sa
   mode: Resource
   resources:
-  - apiVersion: v1
-    kind: Event
+    - apiVersion: v1
+      kind: Event
   sink:
     apiVersion: eventing.knative.dev/v1alpha1
     kind: Broker
     name: default
 ```
 
- If you want to consume events from a different namespace or use a different 
- `Service Account`, you need to modify `k8s-events.yaml` accordingly.
+If you want to consume events from a different namespace or use a different
+`Service Account`, you need to modify `k8s-events.yaml` accordingly.
 
 Enter the following command to create the event source:
 
@@ -111,7 +113,7 @@ kubectl apply --filename k8s-events.yaml
 
 In order to check the `ApiServerSource` is fully working, we will create a
 simple Knative Service that dumps incoming messages to its log and creates a
-`Trigger` from the `Broker` to that Knative Service. 
+`Trigger` from the `Broker` to that Knative Service.
 
 Create a file named `trigger.yaml` and copy the code block below into it.
 
@@ -129,7 +131,6 @@ spec:
       name: event-display
 
 ---
-
 # This is a very simple Knative Service that writes the input request to its log.
 
 apiVersion: serving.knative.dev/v1beta1
@@ -141,9 +142,9 @@ spec:
   template:
     spec:
       containers:
-      - # This corresponds to
-        # https://github.com/knative/eventing-contrib/blob/release-0.5/cmd/event_display/main.go
-        image: gcr.io/knative-releases/github.com/knative/eventing-sources/cmd/event_display@sha256:bf45b3eb1e7fc4cb63d6a5a6416cf696295484a7662e0cf9ccdf5c080542c21d
+        - # This corresponds to
+          # https://github.com/knative/eventing-contrib/blob/release-0.5/cmd/event_display/main.go
+          image: gcr.io/knative-releases/github.com/knative/eventing-sources/cmd/event_display@sha256:bf45b3eb1e7fc4cb63d6a5a6416cf696295484a7662e0cf9ccdf5c080542c21d
 ```
 
 1. If the deployed `ApiServerSource` is pointing at a `Broker` other than