fixed error by changing const to let for age reasignment.

Author: ahmadehsas

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

@@ -2,3 +2,7 @@
 
 const age = 33;
 age = age + 1;
+
+// Error: The variable const for the "age" value can not be reassigned
+// const means "constant" once assigned, it can not be changed.
+// to fix this error, we use "let" instead of "const" to declare the age variable.