Update releases/release-8.1.0.md

releases/release-8.1.0.md

@@ -341,7 +341,7 @@ Compared with the previous LTS 7.5.0, 8.1.0 includes new features, improvements,
         - (dup): release-6.5.9.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that removing a log backup task after it is paused does not immediately restore the GC safepoint [#52082](https://github.com/pingcap/tidb/issues/52082) @[3pointer](https://github.com/3pointer)
         - (dup): release-7.1.5.md > Bug fixes> Tools> Backup & Restore (BR) - Fix a rare issue that special event timing might cause the data loss in log backup [#16739](https://github.com/tikv/tikv/issues/16739) @[YuJuncen](https://github.com/YuJuncen)
         - (dup): release-7.1.5.md > Bug fixes> Tools> Backup & Restore (BR) - Fix the issue that the global checkpoint of log backup is advanced ahead of the actual backup file write point due to TiKV restart, which might cause a small amount of backup data loss [#16809](https://github.com/tikv/tikv/issues/16809) @[YuJuncen](https://github.com/YuJuncen)
-        - Fix the issue that redundant concurrency related information appears in the log during a full backup [#50837](https://github.com/pingcap/tidb/issues/50837) @[BornChanger](https://github.com/BornChanger)
+        - Fix the issue that redundant `--concurrency` related information appears in the log during a full backup [#50837](https://github.com/pingcap/tidb/issues/50837) @[BornChanger](https://github.com/BornChanger)
         - Fix the issue that the Region fetched from PD does not have a Leader when restoring data by BR or importing data by TiDB Lightning in physical import mode [#51124](https://github.com/pingcap/tidb/issues/51124) [#50501](https://github.com/pingcap/tidb/issues/50501) @[Leavrth](https://github.com/Leavrth) 
         - Fix the issue that after pausing, stopping, and rebuilding the log backup task, the task status is normal, but the checkpoint does not advance [#53047](https://github.com/pingcap/tidb/issues/53047) @[RidRisR](https://github.com/RidRisR) 
         - Fix the unstable test case `TestClearCache` [#51671](https://github.com/pingcap/tidb/issues/51671) @[zxc111](https://github.com/zxc111)