Inserting URL's in RTC Comment

I am using IComment class to update comments in RTC.If my Comment Text contains a string representing a url (for eg :- http://www.w3schools.com) it automatically converts this string to url link which is clickable.I want to reduce the length of the url to a single word which clickable having the href of the actual url, something like :-
Visit W3Schools. How can I achieve this ? I tried to insert this tag as such in commentText but it displayed the tag as such in Comments section.