Fix k8s component sample

docs/modules/user-guide/partials/proc_defining-kubernetes-resources.adoc

@@ -43,58 +43,55 @@ The following is an example of the `postgres.yaml` file.
 apiVersion: v1
 kind: List
 items:
--
-    apiVersion: v1
+  - apiVersion: v1
     kind: Deployment
     metadata:
-        name: postgres
-        labels:
-            app: postgres
+      name: postgres
+      labels:
+        app: postgres
     spec:
-        template:
+      template:
         metadata:
+          name: postgres
+          app:
             name: postgres
-            app:
-                name: postgres
         spec:
-            containers:
+          containers:
             - image: postgres
               name: postgres
               ports:
-              - name: postgres
-                containerPort: 5432
-                volumeMounts:
-                - name: pg-storage
-                  mountPath: /var/lib/postgresql/data
-            volumes:
+                - name: postgres
+                  containerPort: 5432
+                  volumeMounts:
+                    - name: pg-storage
+                      mountPath: /var/lib/postgresql/data
+          volumes:
             - name: pg-storage
               persistentVolumeClaim:
-                  claimName: pg-storage
--
-    apiVersion: v1
+                claimName: pg-storage
+  - apiVersion: v1
     kind: Service
     metadata:
+      name: postgres
+      labels:
+        app: postgres
         name: postgres
-        labels:
-            app: postgres
-            name: postgres
     spec:
-        ports:
-            - port: 5432
-              targetPort: 5432
--
-    apiVersion: v1
+      ports:
+        - port: 5432
+          targetPort: 5432
+  - apiVersion: v1
     kind: PersistentVolumeClaim
     metadata:
-        name: pg-storage
+      name: pg-storage
       labels:
         app: postgres
     spec:
-        accessModes:
-         - ReadWriteOnce
-        resources:
-            requests:
-                storage: 1Gi
+      accessModes:
+        - ReadWriteOnce
+      resources:
+        requests:
+          storage: 1Gi
 ----
 
 For a basic example of a devfile with an associated Kubernetes or OpenShift list, see link:https://github.com/redhat-developer/devfile/tree/master/samples/web-nodejs-with-db-sample[web-nodejs-with-db-sample] on redhat-developer GitHub.