How long is the glossary you’re planning to include? You might not need to use an external link at all; ChoiceScript can handle huge pages without much difficulty. It might also be inconvenient for players who have slow or nonexistent Internet connections, or just don’t want to keep referring to the site to look up new words when they could have the glossary within the game itself.
If you do want to use a website, you could create a page for your game on the ChoiceScriptDev Wikia and add it there, or perhaps on your game’s main thread. However, if you want to use multiple pages for the stats screen, it’s pretty easy. This is how I did it:
Blah blah blah
Which page would you like to see?
Blah blah blah, but in Yidian
I recommend labeling the options screen, so you don’t have to copy and paste it at the end of each page, and using a couple of *line_breaks before it to make it look neater. And if you want the choice for a page hidden until a certain point or achievement, you can do it the same way as in the main game:
*if did_something #Yet another page.
Another blah blah blah
And good luck with your game!