ath11k: Fix spelling mistake "detetction" -> "detection"

There is a spelling mistake in an ath11k_warn message. Fix it.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211123090431.165103-1-colin.i.king@gmail.com

drivers/net/wireless/ath/ath11k/wmi.c

@@ -3511,7 +3511,7 @@ ath11k_wmi_obss_color_collision_event(struct ath11k_base *ab, struct sk_buff *sk
 	case WMI_BSS_COLOR_FREE_SLOT_AVAILABLE:
 		break;
 	default:
-		ath11k_warn(ab, "received unknown obss color collision detetction event\n");
+		ath11k_warn(ab, "received unknown obss color collision detection event\n");
 	}
 
 exit: