Fix weird time zone display name on startup (#70)

Author: Flaminel

code/Executable/HostExtensions.cs

@@ -16,7 +16,7 @@ version is null
                 : $"cleanuperr v{version.Major}.{version.Minor}.{version.Build}"
         );
 
-        logger.LogInformation("timezone: {tz}", TimeZoneInfo.Local.Id);
+        logger.LogInformation("timezone: {tz}", TimeZoneInfo.Local.DisplayName);
 
         return host;
     }