fix: wrong konfig example outputs

Signed-off-by: peefy <xpf6677@163.com>

Author: Peefy

docs/user_docs/guides/working-with-konfig/3-quick-start.md

@@ -41,7 +41,7 @@ The programming language of the project is KCL, not JSON/YAML which Kubernetes r
 Enter stack dir `examples/appops/nginx-example/dev` and compile:
 
 ```bash
-cd examples/appops/nginx-example/dev && kcl run
+cd examples/appops/nginx-example/dev && kcl run -D env=dev
 ```
 
 The output YAML is:
@@ -50,39 +50,43 @@ The output YAML is:
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: sampleappprod
+  name: sampleappdev
   namespace: sampleapp
 spec:
   replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: sampleapp
-      app.kubernetes.io/env: prod
-      app.kubernetes.io/instance: sampleapp-prod
-      app.k8s.io/component: sampleappprod
+      app.kubernetes.io/env: dev
+      app.kubernetes.io/instance: sampleapp-dev
+      app.k8s.io/component: sampleappdev
   template:
     metadata:
       labels:
         app.kubernetes.io/name: sampleapp
-        app.kubernetes.io/env: prod
-        app.kubernetes.io/instance: sampleapp-prod
-        app.k8s.io/component: sampleappprod
+        app.kubernetes.io/env: dev
+        app.kubernetes.io/instance: sampleapp-dev
+        app.k8s.io/component: sampleappdev
     spec:
       containers:
-        - image: nginx:1.7.8
-          name: main
-          ports:
-            - containerPort: 80
-              protocol: TCP
-          resources:
-            limits:
-              cpu: 100m
-              memory: 100Mi
-              ephemeral-storage: 1Gi
-            requests:
-              cpu: 100m
-              memory: 100Mi
-              ephemeral-storage: 1Gi
+      - env:
+        - name: MY_ENV
+          value: MY_VALUE
+        image: nginx:1.7.8
+        name: main
+        ports:
+        - containerPort: 80
+          protocol: TCP
+        resources:
+          limits:
+            cpu: '100m'
+            memory: '100Mi'
+            ephemeral-storage: '1Gi'
+          requests:
+            cpu: '100m'
+            memory: '100Mi'
+            ephemeral-storage: '1Gi'
+        volumeMounts: []
 ---
 apiVersion: v1
 kind: Namespace
@@ -96,22 +100,22 @@ metadata:
   namespace: sampleapp
 spec:
   ports:
-    - nodePort: 30201
-      port: 80
-      targetPort: 80
+  - nodePort: 30201
+    port: 80
+    targetPort: 80
   selector:
     app.kubernetes.io/name: sampleapp
-    app.kubernetes.io/env: prod
-    app.kubernetes.io/instance: sampleapp-prod
-    app.k8s.io/component: sampleappprod
+    app.kubernetes.io/env: dev
+    app.kubernetes.io/instance: sampleapp-dev
+    app.k8s.io/component: sampleappdev
   type: NodePort
 ```
 
 After compiling, we can see three resources:
 
-- A `Deployment` with the name `nginx-exampledev`
-- A `Namespace` with the name `nginx-example`
-- A `Service` with the name `nginx-example`
+- A `Deployment` with the name `sampleappprod`
+- A `Namespace` with the name `sampleapp`
+- A `Service` with the name `nginx`
 
 ### 2. Modification
 
@@ -134,61 +138,64 @@ kcl run
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: nginx-exampledev
-  namespace: nginx-example
+  name: sampleappdev
+  namespace: sampleapp
 spec:
   replicas: 1
   selector:
     matchLabels:
-      app.kubernetes.io/name: nginx-example
+      app.kubernetes.io/name: sampleapp
       app.kubernetes.io/env: dev
-      app.kubernetes.io/instance: nginx-example-dev
-      app.kubernetes.io/component: nginx-exampledev
+      app.kubernetes.io/instance: sampleapp-dev
+      app.k8s.io/component: sampleappdev
   template:
     metadata:
       labels:
-        app.kubernetes.io/name: nginx-example
+        app.kubernetes.io/name: sampleapp
         app.kubernetes.io/env: dev
-        app.kubernetes.io/instance: nginx-example-dev
-        app.kubernetes.io/component: nginx-exampledev
+        app.kubernetes.io/instance: sampleapp-dev
+        app.k8s.io/component: sampleappdev
     spec:
       containers:
-        - image: nginx:latest
-          name: main
-          ports:
-            - containerPort: 80
-              protocol: TCP
-          resources:
-            limits:
-              cpu: 100m
-              memory: 100Mi
-              ephemeral-storage: 1Gi
-            requests:
-              cpu: 100m
-              memory: 100Mi
-              ephemeral-storage: 1Gi
+      - env:
+        - name: MY_ENV
+          value: MY_VALUE
+        image: nginx:latest
+        name: main
+        ports:
+        - containerPort: 80
+          protocol: TCP
+        resources:
+          limits:
+            cpu: '100m'
+            memory: '100Mi'
+            ephemeral-storage: '1Gi'
+          requests:
+            cpu: '100m'
+            memory: '100Mi'
+            ephemeral-storage: '1Gi'
+        volumeMounts: []
 ---
 apiVersion: v1
 kind: Namespace
 metadata:
-  name: nginx-example
+  name: sampleapp
 ---
 apiVersion: v1
 kind: Service
 metadata:
-  name: nginx-example
-  namespace: nginx-example
+  name: nginx
+  namespace: sampleapp
 spec:
   ports:
-    - nodePort: 30201
-      port: 80
-      targetPort: 80
+  - nodePort: 30201
+    port: 80
+    targetPort: 80
   selector:
-    app.kubernetes.io/name: nginx-example
+    app.kubernetes.io/name: sampleapp
     app.kubernetes.io/env: dev
-    app.kubernetes.io/instance: nginx-example-dev
-    app.kubernetes.io/component: nginx-exampledev
-  type: NodePort
+    app.kubernetes.io/instance: sampleapp-dev
+    app.k8s.io/component: sampleappdev
 ```
 
 ## Summary