test: 删除配置项示例

Test/Program.cs

@@ -17,6 +17,8 @@ internal static class Program
         var b = config.Get("aaa.bbb", "1");
         var c = config.Get("aaa.sss", "1");
         var d = config.Get("bbb.sss", "1");
+
+        config.Delete("aaa.www");
     }
 }