Docs: Change absolete instruction

Author: rakieta2015

README.md

@@ -183,7 +183,7 @@ $ php vendor/bin/phpunit
 ```
 
 Open your browser with address: [localhost:8000](localhost:8000)  
-Click "Notes" on topbar menu and log in with credentials:
+Click "Login" on sidebar menu and log in with credentials:
 
 * E-mail: _[email protected]_
 * Password: _password_