fix lint copyright

wxiaoguang · wxiaoguang · commit d8d677a2e72b · 2022-07-10T00:18:29.000+08:00
diff --git a/modules/ssh/init.go b/modules/ssh/init.go
@@ -1,3 +1,7 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
 package ssh
 
 import (
