How do you make something not look clickable?
You can use a lighter font so it's distinct from the actual content. Here's a version w/ lighter and tucked completely into the corner, and one where you don't put any borders, just a simple gray text. These are great options. I recommend number 1, as it is the most obvious, and does not looks like a button or a link.
How to indicate something is a hyperlink?
The traditional cue for hyperlinks is blue text, like we're using here. And buttons, like their real-world counterparts, are rectangular, and have a 3-D appearance. These conventions provide the strongest perceived affordance of clickabilty and in early years we recommended that buttons and links follow these patterns.