feature: add test hint

src/pagesLayer/HomePage/ui/HomePage.tsx

@@ -15,9 +15,12 @@ const HomePage = () => {
 					yunglocokid
 				</Link>
 			</p>
-			<pre className={cls.hint}>
+			<pre className={cls.hint} data-testid="hint-code">
 				You can edit <span className={cls.path}>src/pagesLayer/HomePage</span>{" "}
-				to start {"<3"}!
+				to start {"<3"}!<br />
+				<small className={cls.testHint}>
+					You can also test your application using Jest :D. Try it!
+				</small>
 			</pre>
 		</div>
 	)