locking/seqlock: Fix grammar in comment

The "neither writes before and after ..." for the description
of do_write_seqcount_end() should be "neither writes before nor after".
Signed-off-by: Cuda-Chen <clh960524@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20231017053703.11312-1-clh960524@gmail.com

include/linux/seqlock.h

@@ -584,7 +584,7 @@ static inline void do_write_seqcount_end(seqcount_t *s)
  * via WRITE_ONCE): a) to ensure the writes become visible to other threads
  * atomically, avoiding compiler optimizations; b) to document which writes are
  * meant to propagate to the reader critical section. This is necessary because
- * neither writes before and after the barrier are enclosed in a seq-writer
+ * neither writes before nor after the barrier are enclosed in a seq-writer
  * critical section that would ensure readers are aware of ongoing writes::
  *
  *	seqcount_t seq;