Updated the official document links (#395)

The previous document links has expred

nfpm.yaml

@@ -8,7 +8,7 @@ priority:    "extra"
 maintainer:  "QingStor <[email protected]>"
 description: "Advanced command line tool for QingStor."
 vendor:      "Yunify, Inc."
-homepage:    "https://docs.qingcloud.com/qingstor/developer_tools/qsctl.html"
+homepage:    "https://docsv4.qingcloud.com/user_guide/storage/object_storage/manual/tool/qsctl/"
 license:     "Apache-2.0"
 bindir:      "/usr/bin"
 files: