In my original PR I left this out because this comment relates more to work in MSDocs. Maybe a GitHub issue is a better place for it than a comment?

We should add this information in both repos before release. I couldn't figure out how to configure this. Can you provide an example?

Suppression is not different that any other rule. For example[System.Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSAvoidAssignmentToAutomaticVariable', '')] suppresses the rule and[System.Diagnostics.CodeAnalysis.SuppressMessageAttribute('PSAvoidAssignmentToAutomaticVariable', 'PID')] makes the suppression specific to assignment to$PID automatic variable

Can you only do this in code? Other rules can be configured using JSON. For example:https://learn.microsoft.com/powershell/utility-modules/psscriptanalyzer/rules/usesingularnouns#configuration

Suppression is only possible via annotating code with this attribute unless one decided to not run rule at all via PSSA settings but I wouldn't call that suppression:https://learn.microsoft.com/en-us/powershell/utility-modules/psscriptanalyzer/using-scriptanalyzer?view=ps-modules#suppressing-rules
What you reference is rule configuration as part of PSSA settings, which is not JSON, it's PowerShell's hashtable format:https://learn.microsoft.com/en-us/powershell/utility-modules/psscriptanalyzer/using-scriptanalyzer?view=ps-modules#settings-support-in-scriptanalyzer