resolve mismatched string aliases

Author: drdrew42

OpenProblemLibrary/FortLewis/Algebra/4-5-Functions-and-modeling/MCH1-4-5-01-Functions-and-modeling.pg

@@ -43,7 +43,7 @@ $showPartialCorrectAnswers = 1;
 
 Context("Numeric");
 Context()->strings->remove("NONE");
-Context()->strings->add("NO"=>{},"N"=>{alias=>"no"},"NONE"=>{alias=>"no"});
+Context()->strings->add("no"=>{},"N"=>{alias=>"no"},"NONE"=>{alias=>"no"});
 
 
 $a = random(45,65,5);