No option to re-enter MySQL database details

I’m trying to manually install WordPress to my domain. I accidentally entered the wrong MySQL database details when I reached the setup page on mydomainname.com/wp-admin.

Now I am receiving this message everytime I try and go to that link:

“Error establishing a database connection
This either means that the username and password information in your wp-config.php file is incorrect or we can’t contact the database server at localhost. This could mean your host’s database server is down.

→
Are you sure you have the correct username and password?
→
Are you sure that you have typed the correct hostname?
→
Are you sure that the database server is running?”

There is no option to try and re-enter my details. How do I fix this? Thanks!