Lesson-1.markdown

@@ -93,7 +93,7 @@ White 			| 430		| 57.97					| -0.03
 The result with the red LED turned off is shown in the following table.
 
 Color 			| Raw value | Calculated percentage | Delta percentage
-------- 		| ----- 	| --------- 			|
+------- 		| ----- 	| --------- 			| -------
 Yellow 			| 730 		| 28.64	 				| 1.64 
 Orange 			| 737 		| 27.96					| 1.96
 Red 			| 742 		| 27.47					| 2.47