cephfs: fix a minor typo in a doc comment
@@ -337,7 +337,7 @@ const (
// LockEX places an exclusive lock.
// Only one process may hold an exclusive lock for a given file at a given time.
LockEX = LockOp(C.LOCK_EX)
- // LockUN removes and existing lock held by this process.
+ // LockUN removes an existing lock held by this process.
LockUN = LockOp(C.LOCK_UN)
// LockNB can be ORed with any of the above to make a nonblocking call.
LockNB = LockOp(C.LOCK_NB)
