Fix typo in NFS read performance improvement

Author: mksahakyan

release-notes-11.2

@@ -64,7 +64,7 @@ HTML header: <title>dCache 11.2 Release Notes</title>
 
 ## Highlights
 
-- NFS reag performance improvement
+- NFS read performance improvement
 - Kafka logging for billing
 - Introduce hot file replication mechanism on pools, where the pool itself tiggers replication of hot (popular) files
 
@@ -138,7 +138,7 @@ a stage and potentially block. This behavior is now changed, so that the `prepar
 the error `Unsupported`. Users who need staging should use the TAPE-REST-API.
 
 
-### Changelog from 11.0.0 to 11.1.0
+### Changelog from 11.1.0 to 11.2.0
 
 <!-- git log 11.1..11.2 -no-merges -format='[%h](https://github.com/dcache/dcache/commit/%H)%n:   %s%n' -->