Merge pull request '修改etag以符合bunny' (#6) from master into main

Reviewed-on: #6

app/controller/Server.php

@@ -103,7 +103,7 @@ class Server
             return redirect('/');
         }
         if($source->type==0){
-            $etag='"'.md5($source->source).'"';
+            $etag='W/"'.md5($source->source).'"';
             $if_none_match = $request->header('If-None-Match',null);
             if($if_none_match==$etag){
                 return response('',304);