Incorrect regex in documentation

[causton81]

This Java example has the line String excludeSystemEventsRegex = "/^[^\\$].*/"; NOTE surrounding /
https://developers.eventstore.com/clients/grpc/subscriptions.html#filtering-out-system-events

I have to remove the outer / and use just final String excludeSystemEventsRegex = "^[^\\$].*";

Java client: 4.0.0
ESDB docker container: tags/oss-v21.10.8

[YoEight]

Thanks @causton81 for reporting that issue.