Merge pull request #1296 from Nalum/patch-1

Fix formatting

controllers/nginx/examples/custom-upstream-check/README.md

@@ -1,6 +1,6 @@
-
 This example shows how is possible to create a custom configuration for a particular upstream associated with an Ingress rule.
 
+```
 echo "
 apiVersion: extensions/v1beta1
 kind: Ingress
@@ -18,12 +18,12 @@ spec:
           serviceName: echoheaders
           servicePort: 80
 " | kubectl create -f -
-
+```
 
 Check the annotation is present in the Ingress rule:
 ```
 kubectl get ingress echoheaders -o yaml
-``
+```
 
 Check the NGINX configuration is updated using kubectl or the status page: