How to make a cheatsheet/crib sheet using Pages
I would use Numbers.app and it's tables.

You get better control over tables in Numbers. With simple things like resizing and not having to change setting to make the table stick in place like tables in Pages.

For this example I simply pasted the info from the site you provided straight into a blank sheet because they use tables. Which means the data will past as a Numbers table.

I then added a row for the title header.

I could easily make the table from scratch and also coping a whole table is as easy as selecting the table, copy, paste.