Update main_test.js

lab2/main_test.js

@@ -4,7 +4,7 @@ const fs = require('fs');
 const { Application, MailSystem } = require('./main');  
 
 // TODO: write your tests here 
-// Remember to use Stub, Mock, and Spy when necessary
+// Remember to use Stub, Mock, and Spy when necessary 
 // test("Test MailSystem's write", () => {
 //     const mailsystem = new MailSystem();
 //     assert.strictEqual(mailsystem.write("John"), 'Congrats, John!');