refactor : 重构代码

Assets/YooAsset/Runtime/OperationSystem/OperationSystem.cs

@@ -77,7 +77,7 @@ namespace YooAsset
         {
             if (_isInitialized)
             {
-                YooLogger.Warning("Operation system is already initialized!");
+                YooLogger.Warning("Operation system is already initialized.");
                 return;
             }
 
@@ -174,7 +174,7 @@ namespace YooAsset
             // 不允许销毁默认调度器
             if (packageName == GlobalSchedulerName)
             {
-                throw new YooInternalException("Cannot destroy the global package scheduler!");
+                throw new YooInternalException("Cannot destroy the global package scheduler.");
             }
 
             if (_schedulerDic.TryGetValue(packageName, out var scheduler))
@@ -261,7 +261,7 @@ namespace YooAsset
                 throw new YooInternalException("Package name is null or empty.");
 
             if (_isInitialized == false)
-                throw new YooInternalException($"{nameof(OperationSystem)} not initialized !");
+                throw new YooInternalException($"{nameof(OperationSystem)} not initialized.");
         }
         #endregion
     }