pack: prettier now use space instead of tab

src/renderer/index.html

@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html>
-	<head>
-		<meta charset="utf-8" />
-	</head>
-	<body>
-		<div id="app"></div>
-	</body>
-	<script type="module" src="./main.ts"></script>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <div id="app"></div>
+  </body>
+  <script type="module" src="./main.ts"></script>
 </html>