In the installation instructions, someone placed the code block for step 2 into the section of step 3.

Step 3 itself contains a code block, that seems unrelated to all.
https://community.chef.io/tools/chef-habitat#start
Note:
Considering that is the main landing page, and it was practically unavoidable to stumble across two major issues within just seconds as an user (also see #9689) you might consider a different workflow for the website.
Like proof reading, before going online.