adapted to Kick Assembler, some documentation update

c64/basic/peek_pointer_null_check.s

@@ -1,5 +1,5 @@
-	;; Return C=1 if a pointer in BASIC memory space is NULL, else C=0
-	;; X = ZP pointer to check
+// Return C=1 if a pointer in BASIC memory space is NULL, else C=0
+// X = ZP pointer to check
 
 peek_pointer_null_check:
 	ldy #$00
@@ -11,10 +11,10 @@ peek_pointer_null_check:
 	cmp #$00
 	bne ptr_not_null
 
-	;; Pointer is NULL
+	// Pointer is NULL
 	clc
 	rts
 ptr_not_null:
 	sec
 	rts
-	
+