fix scaffold error

weed/command/scaffold.go

@@ -351,10 +351,10 @@ sleep_minutes = 17          # sleep minutes between each script execution
 default_filer_url = "http://localhost:8888/"
 
 [master.sequencer]
-type = memory     # Choose [memory|etcd] type for storing the file id sequence
+type = "memory"     # Choose [memory|etcd] type for storing the file id sequence
 # when sequencer.type = etcd, set listen client urls of etcd cluster that store file id sequence
 # example : http://127.0.0.1:2379,http://127.0.0.1:2389
-sequencer_etcd_urls = http://127.0.0.1:2379
+sequencer_etcd_urls = "http://127.0.0.1:2379"
 
 
 [storage.backend.s3]