scsi: mpi3mr: Fix typo and grammar

Corrected grammar, spelling, and formatting in the kernel-doc comment
for mpi3mr_os_handle_events() to follow kernel-doc style and improve
clarity.

Signed-off-by: Chelsy Ratnawat <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/scsi/mpi3mr/mpi3mr_os.c

···
  * @mrioc: Adapter instance reference
  * @event_reply: event data
  *
- * Identify whteher the event has to handled and acknowledged
- * and either process the event in the tophalf and/or schedule a
- * bottom half through mpi3mr_fwevt_worker.
+ * Identifies whether the event has to be handled and acknowledged,
+ * and either processes the event in the top-half and/or schedule a
+ * bottom-half through mpi3mr_fwevt_worker().
  *
  * Return: Nothing
  */