feat(docs): PageHeader code for composition (#2330)

Co-authored-by: xing.wu <wuxing@bjca.org.cn>

website/docs/en-US/page-header.md

@@ -18,6 +18,25 @@ If path of the page is simple, it is recommended to use PageHeader instead of th
     }
   }
 </script>
+<!--
+<setup>
+
+  import { defineComponent } from 'vue';
+
+  export default defineComponent({
+    setup() {
+      const goBack = () => {
+        console.log('go back');
+      };
+
+      return {
+        goBack,
+      };
+    },
+  });
+
+</setup>
+-->
 ```
 :::
 

website/docs/es/page-header.md

@@ -18,6 +18,25 @@ If path of the page is simple, it is recommended to use PageHeader instead of th
     }
   }
 </script>
+<!--
+<setup>
+
+  import { defineComponent } from 'vue';
+
+  export default defineComponent({
+    setup() {
+      const goBack = () => {
+        console.log('go back');
+      };
+
+      return {
+        goBack,
+      };
+    },
+  });
+
+</setup>
+-->
 ```
 :::
 

website/docs/fr-FR/page-header.md

@@ -18,6 +18,25 @@ If path of the page is simple, it is recommended to use PageHeader instead of th
     }
   }
 </script>
+<!--
+<setup>
+
+  import { defineComponent } from 'vue';
+
+  export default defineComponent({
+    setup() {
+      const goBack = () => {
+        console.log('go back');
+      };
+
+      return {
+        goBack,
+      };
+    },
+  });
+
+</setup>
+-->
 ```
 :::
 

website/docs/jp/page-header.md

@@ -18,6 +18,25 @@ If path of the page is simple, it is recommended to use PageHeader instead of th
     }
   }
 </script>
+<!--
+<setup>
+
+  import { defineComponent } from 'vue';
+
+  export default defineComponent({
+    setup() {
+      const goBack = () => {
+        console.log('go back');
+      };
+
+      return {
+        goBack,
+      };
+    },
+  });
+
+</setup>
+-->
 ```
 :::
 

website/docs/zh-CN/page-header.md

@@ -18,6 +18,25 @@
     }
   }
 </script>
+<!--
+<setup>
+
+  import { defineComponent } from 'vue';
+
+  export default defineComponent({
+    setup() {
+      const goBack = () => {
+        console.log('go back');
+      };
+
+      return {
+        goBack,
+      };
+    },
+  });
+
+</setup>
+-->
 ```
 :::