Change post list updateTime to createTime.

src/views/post/PostList.vue

@@ -180,9 +180,9 @@
           </span>
 
           <span
-            slot="updateTime"
-            slot-scope="updateTime"
-          >{{ updateTime | timeAgo }}</span>
+            slot="createTime"
+            slot-scope="createTime"
+          >{{ createTime | timeAgo }}</span>
 
           <span
             slot="action"
@@ -436,9 +436,9 @@ const columns = [
     dataIndex: 'visits'
   },
   {
-    title: '更新时间',
-    dataIndex: 'updateTime',
-    scopedSlots: { customRender: 'updateTime' }
+    title: '发布时间',
+    dataIndex: 'createTime',
+    scopedSlots: { customRender: 'createTime' }
   },
   {
     title: '操作',