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Update 2020最新Java并发进阶常见面试题总结.md

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`@@ -223,10 +223,7 @@ JDK1.6 对锁的实现引入了大量的优化,如偏向锁、轻量级锁、`
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`224`	`224`	`锁主要存在四种状态,依次是:无锁状态、偏向锁状态、轻量级锁状态、重量级锁状态,他们会随着竞争的激烈而逐渐升级。注意锁可以升级不可降级,这种策略是为了提高获得锁和释放锁的效率。`
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`226`		`-关于这几种优化的详细信息可以查看下面这几篇文章:`
`227`		`-`
`228`		`-- [Java 性能 -- synchronized 锁升级优化](https://blog.csdn.net/qq_34337272/article/details/108498442)`
`229`		`-- [Java6 及以上版本对 synchronized 的优化](https://www.cnblogs.com/wuqinglong/p/9945618.html)`
	`226`	`+关于这几种优化的详细信息可以查看下面这篇文章:[Java6 及以上版本对 synchronized 的优化](https://www.cnblogs.com/wuqinglong/p/9945618.html)`
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`231`	`228`	`### 1.5. 谈谈 synchronized 和 ReentrantLock 的区别`
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