[OH3] Docs for new logging config?

[hmerk (Hans-Jörg Merk)]

This one might be helpfull

OH 3 no longer writes in "event.log"

I’m on build # 2072 but I think the problem started earlier, I think 2065. At some point I noticed that the last entries are from the day before, then deleted the events.log file, it was created again but is empty. The Openab.log is written, here the start (unfortunately there are many errors regarding the influxdb): 2020-12-13 21:13:00.441 [INFO ] [.core.internal.i18n.I18nProviderImpl] - Time zone set to 'Europe/Vienna'. 2020-12-13 21:13:00.501 [INFO ] [.core.internal.i18n.I18nProviderImpl] - …