Update ctc.asm

Source/HBIOS/ctc.asm

@@ -112,7 +112,7 @@ CTC_PREINIT1:
 ;
 	; CTC USES 4 CONSECUTIVE VECTOR POSITIONS, ONE FOR
 	; EACH CHANNEL.  BELOW WE SET THE BASE VECTOR TO THE
-	; START OF THE IVT, SO THE FIRST FOUR ENTIRES OF THE
+	; START OF THE IVT, SO THE FIRST FOUR ENTRIES OF THE
 	; IVT CORRESPOND TO CTC CHANNELS A-D.
 	LD	A,INT_CTC0A * 2
 	OUT	(CTCBASE),A		; SETUP CTC BASE INT VECTOR