Update receipt.txt

receipt.txt

+SafeVend receipt: 
+Thank you for choosing SafeVend!
+________________________________
 Items purchased: 
 Code	Item		Price	Quantity 	
-01	Chocolate	2.0	2.0	
+01	Chocolate	2.0	5.0	
+03	Drink		1.0	5.0	
+05	Sweet		1.0	5.0	
+________________________________
 
-Total cost: 2.0
+Total cost: 20.0
 
-Total payed: 0.0
+Total payed: 20.0
 
-Change Given: 1.0
+Change Given: 0.0
 
 valid payment: true
+________________________________
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