Fix duplicate LO-5.1.4.2 by changing section 5.1.3.1 to use LO-5.1.3.1

Author: solomon.legodi

website/docs/chapter-05/01_advanced_variables.md

@@ -309,7 +309,7 @@ As long as a value is iterable, it can be assigned to a list variable using the
 
 ::::lo[Learning Objectives]
 
-:::K1[LO-5.1.4.2]
+:::K1[LO-5.1.3.1]
 
 Recall that `@{list}` unpacks the values of a list variable when accessed