Usage of own URL

I need to use my URL instead of

How I can configure my url in system

Get your webmaster to set up a redirect.

please guide me in detail. I cant find the web master

If you own domain name, the most popular domain registrars offer free web redirect on their domains.

This is wrong place to ask. It’s better to check where you registered your domain name and see if they offer this service as it would be the easiest way to set up.