Added comment

sports-matcher/src/SignIn.js

@@ -14,6 +14,8 @@ export default function SignIn() {
   const navigate = useNavigate();
   const handleSubmit = (event) => {
     event.preventDefault();
+    // For Phase 1, we have hardcoded the usernames and passwords as specified in the handout
+    // For the upcoming phases, this will be changed to secure authentication
     const data = new FormData(event.currentTarget);
     // eslint-disable-next-line no-console
     if (data.get('username') === "admin" && data.get('password') === "admin") {