You use the URL tags, like you would use IMG tags.

Normal link looks like this;

https://passionford.com/forum/computers-consoles-and-i-t/227972-link-editing.html

To make it look like this;

CLICK ME

You need to write it like this;

[ url=https://passionford.com/forum/showthread.php?t=227972 ]CLICK ME[/url][/code]

Notice the [url] at the front of the link, a ] and the end of it, then whatever text you want - CLICK ME in this case - and then another URL tag on the end (with a / in it) - NOTE, I put spaces in to show it as a line of code, you have to have NO spaces in it for it to work! Normally I'd use the CODE tags but for some reason they don't work?