HDFS-9570. Update CHANGES.txt to list under 2.8.0.

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -211,9 +211,6 @@ Trunk (Unreleased)
   OPTIMIZATIONS
 
   BUG FIXES
-
-    HDFS-9570. Minor typos, grammar, and case sensitivity cleanup in
-    HdfsPermissionsGuide.md's (Travis Campbell via aw)
  
     HADOOP-9635 Fix potential Stack Overflow in DomainSocket.c (V. Karthik Kumar
                 via cmccabe)
@@ -2507,6 +2504,9 @@ Release 2.8.0 - UNRELEASED
     HDFS-9565. TestDistributedFileSystem.testLocatedFileStatusStorageIdsTypes
     is flaky due to race condition. (Wei-Chiu Chuang via Arpit Agarwal)
 
+    HDFS-9570. Minor typos, grammar, and case sensitivity cleanup in
+    HdfsPermissionsGuide.md's (Travis Campbell via aw)
+
 Release 2.7.3 - UNRELEASED
 
   INCOMPATIBLE CHANGES