To revise it, you have to find out where you have to revise.
Luckily, some internet browser such as Google chrome and firefox provides a tool, called as Inspect Element.
You can get the location by it and let's see how we can do:
For example, after installing wordpress theme, sometimes, you want to change footer link or theme designer name. You have to know where to edit. Here is a knowhow.
Designate the place that you want to revise and click right mouse button. You will see Inspect Element.
You can assume where that is by Inspect Element:
Place is related to footer.
Now, go to your theme and check it. Then, you can revise it.
So, Using Inspect Element can be a good way to revise things.
In your footer.php of your theme, find the same letters in hour website and revise it.
Thank you.