StringSyntaxAttribute - No practical examples

[gravity-api]

Missing more information and some practical examples of how and when to use.

https://learn.microsoft.com/en-us/dotnet/api/system.diagnostics.codeanalysis.stringsyntaxattribute

[dotnet-issue-labeler]

I couldn't figure out the best area label to add to this issue. If you have write-permissions please help me learn by adding exactly one area label.

[dotnet-policy-service]

Tagging subscribers to this area: @tommcdon