revert unneeded changes in template

src/Greenshot.Plugin.Box/Greenshot.Plugin.Box.Credentials.template

@@ -1,4 +1,25 @@
-namespace Greenshot.Plugin.Box {
+/*
+ * Greenshot - a free and open source screenshot tool
+ * Copyright (C) 2007-2021 Thomas Braun, Jens Klingen, Robin Krom
+ * 
+ * For more information see: http://getgreenshot.org/
+ * The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 1 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace Greenshot.Plugin.Box {
 	/// <summary>
 	/// This class is merely a placeholder for the file keeping the API key and secret for Box integration.
 	/// You can set your own values here
@@ -6,6 +27,5 @@
 	public static class BoxCredentials {
 		public static string ClientId = "${Box13_ClientId}";
 		public static string ClientSecret = "${Box13_ClientSecret}";
-	}}
-
-// test
+	}
+}