Docs: Clarify that static analyzers only support amd64

What does this MR do?

Clarify that ARM CPUs aren't supported and provide an easy lookup for this type of error in job logs.

Related issues

Slack thread (team members only, expires in April 2023): https://gitlab.slack.com/archives/CLA54H7PY/p1674591194534259

Provide multi-architecture images for Sec analy... (#355809 - closed)

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