How do u that ?
If you're not sure how you can ask something fishy to do it for you.
You have to go to the master thread of trip reports. The open the wiki, on the top left there's a link that says "edit wiki".
Find the location that you want to add to (if your trip report is in a new location not listed it's a different process) in the editor (it will take a few minutes to get used to, have a separate tab open to compare what the wiki looks like to the code).
Then just add in next to the other similar formatted links
[url=your trip reports link goes here]username goes here[/url],