Module 3 review

[immavalls]

• Mostly fixed minor format issues, typos, and broken links.
• I've refactored the location for module 08, as it was difficult to follow when navigating directly.

Note: I'm leaving for another PR the changes to https://github.com/grafana/k6-learn/blob/main/Modules/III-k6-Intermediate/08-Setting-load-profiles-with-executors/Ramping-Arrival-Rate-Exercises.md#autoscaling-of-virtual-users and https://github.com/grafana/k6-learn/blob/main/Modules/III-k6-Intermediate/08-Setting-load-profiles-with-executors/Constant-Arrival-Rate-Exercises.md#autoscaling-of-virtual-users. We should probably discourage the use of maxVUs in favor of allocating the required number of VUs, and explain the executor behavior a bit better here, and in the docs.

[MattDodsonEnglish]

Thanks so much for the dust up. I appreciate the commitment to that for unrestricted clauses. I thought I was the only one who cared about this important issue 😁

I just left some nits, the vast majority of which weren't even from the suggested changes, but just happened to be in the relevant lines.

Since these are all grammar and formatting, I'm going to say that we can merge this without Nicole's review. For any load testing related changes, though, it's definitely better to get a review from the experts.

[MattDodsonEnglish]

Suggested change

	- Extract the [Cross-Site Request Forgery (CSFR)](https://owasp.org/www-community/attacks/csrf) token from Step 1.
	- Extract the [Cross-Site Request Forgery (CSFR)](https://owasp.org/www-community/attacks/csrf) token from Step 1.

Is this the first place that CSFR appears? I think we might want to link it there, or not link unless it's necessary here. Generally, I try to avoid links in direct procedures, since links naturally call to themselves, which may divide the reader's attention.

Willing to change my opinion though if the info is particularly useful here.

[immavalls]

I think it was the first appearance, and for newcomers it's good to explain what this is (unless we had a glossary)