feat: 背景图片移动至hblog文件夹下

templates/index/hello.html

@@ -7,7 +7,7 @@
     <link href="{{ url_for('static', filename='styles/index/hello.css') }}" rel="stylesheet">
     <style>
         body {
-            background-image: url("{{ url_for('oss.get_page', name="bg-img.jpg") }}");
+            background-image: url("{{ url_for('oss.get_page', name="/hblog/bg-img.jpg") }}");
             overflow-y: hidden;
             overflow-x: hidden;
         }