Merge pull request Snailclimb#1422 from 1036956372/patch-1

CMS垃圾收集器jvm参数大小写错误

Author: Snailclimb

docs/java/jvm/最重要的JVM参数指南.md

@@ -106,7 +106,7 @@ JVM具有四种类型的*GC*实现：
 ```
 -XX:+UseSerialGC
 -XX:+UseParallelGC
--XX:+USeParNewGC
+-XX:+UseParNewGC
 -XX:+UseG1GC
 ```