Hi -- and thanks so much for responding to this. As soon as I saw it, I updated the topic and temporarily removed the instructions, which were really a holdover from M1 that slipped through the cracks. (Sorry about that!) Language packs for M2 are currently in development and as soon as they become available, I'll update the instructions and restore them to the topic From what I understand, we should expect the first M2 language packs sometime later in Q2. However, you can still translate store content such as product and category descriptions, CMS pages, and blocks for each view.
You can also use the Inline Translator to touch up individual strings of text in the UI of the storefront. We'll soon have a topic for that in the user guide, as well. You can find it in the configuration under Advanced > Developer.