fmtx: &H requires divisor

USBCAS/fmtx.c

@@ -176,7 +176,7 @@ static uint8_t do_cmd(uint8_t cmd, const uint16_t *arg)
 		return rx_idle;
 	case 'H':
 		/* Begin header block */
-		/* &H [divisor] */
+		/* &H divisor */
 		rx_blk->pause = (3*362) << BIT_PATTERN_LEN_LG2;
 		rx_blk->data.blktype = rx_blk->data.blkno = -1;
 		goto blk_common;