Clarify what count special characters for key

[hongbo-miao]

Based on https://www.openpolicyagent.org/docs/latest/configuration/#keys-with-special-characters

If you have a key which contains a special character (., =, etc), like opa.example.com, and want to use the --set or --set-file options you will need to escape the character with a backslash (\).

Currently it uses "etc", it would be great to clarify more what count special characters.
For example I am wondering does _ and - count as they are very common being used.
Or provide a full list of characters that count special, that will be very helpful too.

Thanks! 😀

[tsandall]

The runes happen to be: = [ , .. If you could submit a patch on the docs it would be much appreciated. Here is the source for that page.

[hongbo-miao]

Sure, happy to help. Thanks for the info!

[hongbo-miao]

Done at #3642