missing introduction to Socket.io challenges

[clandau]

Describe the bug
Socket.io challenges in Advanced Node and Express are missing an intro, and description about what the challenge is doing. It looks almost as if there is a challenge missing in between "Social Auth III" and "setting up the environment". I say this because the part in which you set up the http variable is missing as well, which makes the first instructions confusing, as you don't have the http variable in the code yet.

from challenge:

Add Socket.IO as a dependency and require/instantiate it in your server defined as 'io' with the http server as an argument. const io = require('socket.io')(http);

To Reproduce
Link to first challenge in Socket.io series:
https://learn.freecodecamp.org/information-security-and-quality-assurance/advanced-node-and-express/set-up-the-environment

Desktop (please complete the following information):

• OS: [ iOS]
• Browser [chrome]
• Version [67]