Replace localhost with real domain name in reset password of Laravel 5

Change the APP_URL parameter in your .env file to adapt the app's domain name.

APP_URL=http://localhost to APP_URL=https://yourdomain.com

If you cache your config (which you shouldn't do in local or test environment but definitely in production), don't forget to use the php artisan config:clear command.

update APP_URL in .env file and clear the cache to reflect changes