Update nginx.conf.j2

@@ -28,8 +28,8 @@ http {
                         '$http_user_agent|$upstream_addr';
 
 
-     # limit req configuration   limit for 10r/s for every ip
-     limit_req_zone $binary_remote_addr zone=limit_ufo:30m rate=10r/s;
+     # limit req configuration   limit for 20r/s for every ip
+     limit_req_zone $binary_remote_addr zone=limit_ufo:30m rate=20r/s;
 
 
     sendfile        on;