add task for previewing site

notes/.vscode/tasks.json

@@ -3,6 +3,15 @@
   // for the documentation about the tasks.json format
   "version": "2.0.0",
   "tasks": [
+    {
+      "label": "preview site",
+      "type": "shell",
+      "command": "dendron publish dev",
+      "options": {
+        "cwd": "${workspaceFolder}/../"
+      },
+      "problemMatcher": []
+    },
     {
       "label": "build site",
       "type": "shell",
@@ -18,8 +27,10 @@
       "options": {
         "cwd": "${workspaceFolder}/../"
       },
-      "dependsOn": ["build site"],
+      "dependsOn": [
+        "build site"
+      ],
       "problemMatcher": []
-    },
+    }
   ]
 }