Correct spelling mistakes.

code/botlib/be_ai_gen.c

@@ -62,7 +62,7 @@ int GeneticSelection(int numranks, float *rankings)
 	} //end for
 	if (sum > 0)
 	{
-		//select a bot where the ones with the higest rankings have
+		//select a bot where the ones with the highest rankings have
 		//the highest chance of being selected
 		//sum *= random();
 		for (i = 0; i < numranks; i++)