更新index.json !11

index.json

             "ref": "master",
             "detail": "detail.json",
             "chapters": "chapters.json",
-            "index_image": "https://img-blog.csdnimg.cn/52a18a4e28904e319acdd0b56cf0ecce.png",
+            "index_image": "https://img-blog.csdnimg.cn/5640feb44c4249ada94816566f509c1b.png",
             "index_video": "",
             "original_price": "48.0",
             "line_price": "48.0",