refactor: 清理代码

JackCraft.Config/Config.cs

@@ -39,7 +39,10 @@ public class Config
         }
     }
 
-    public T? Get<T>(string key) => Get<T>(key, default);
+    public T? Get<T>(string key)
+    {
+        return Get<T>(key, default);
+    }
 
     public T? Get<T>(string key, T? defaultValue)
     {