Proper way to add a featured link to an existing topic?

I understand that there is no functionality to add a featured link after having created a new topic.

On my forum, I have created a category of which the only purpose is to redirect users to another website.
This category is closed and the only topic is the automatically created “About the XXX category” topic, which I edited to invite users to follow a link.

To make it a little better, I added a featured link to this topic with this rails command:

Topic.find(265336).update("featured_link": "")

If I need to add a featured link to an existing topic, is that the recommended way? Are there potential database inconsistency or risk to break something doing this?