ocfs2: spelling fix

Modify reques to request in the comment.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Yongzhen Zhang <[e-mail]>
Acked-by: Joseph Qi <[e-mail]>
Cc: Mark Fasheh <[e-mail]>
Cc: Joel Becker <[e-mail]>
Cc: Junxiao Bi <[e-mail]>
Cc: Changwei Ge <[e-mail]>
Cc: Gang He <[e-mail]>
Cc: Jun Piao <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>

fs/ocfs2/dlmglue.c

···
 unlock:
 	lockres_clear_flags(lockres, OCFS2_LOCK_UPCONVERT_FINISHING);
 
-	/* ocfs2_unblock_lock reques on seeing OCFS2_LOCK_UPCONVERT_FINISHING */
+	/* ocfs2_unblock_lock request on seeing OCFS2_LOCK_UPCONVERT_FINISHING */
 	kick_dc = (lockres->l_flags & OCFS2_LOCK_BLOCKED);
 
 	spin_unlock_irqrestore(&lockres->l_lock, flags);