Changed age variable to let in 1.js

Author: habohlin

Sprint-2/2-mandatory-errors/1.js

@@ -1,4 +1,6 @@
 // trying to create an age variable and then reassign the value by 1
 
-const age = 33;
+let age = 33;
 age = age + 1;
+
+// Answer: I changed the const to let, so the variable age becomes reassignable