Documentation lacks how to enable Project snippets

Summary

There is no button to do this, yet the docs mention it.

Steps to reproduce

(How one can reproduce the issue - this is very important)

Example Project

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What is the current bug behavior?

(What actually happens)

What is the expected correct behavior?

(What you should see instead)

Relevant logs and/or screenshots

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Output of checks

This bug happens on GitLab.com