Fix comment

Author: Rangi42

hardware.inc

@@ -812,7 +812,7 @@ def rRTCREG equ $A000
 
 ; ** MBC5 only ****************************************************************
 
-; -- ROMB0 ($2000-$3FFF) ------------------------------------------------------
+; -- ROMB0 ($2000-$2FFF) ------------------------------------------------------
 ; ROM bank number low byte (bits 0-7) [wo]
 def rROMB0 equ $2000