Improve logger documentation.
Improve logger documentation.

HelixEducation/sarama,winlinvip/sarama,crast/sarama,Neuw84/sarama,uovobw/sarama,betable/sarama,raisemarketplace/sarama,aybabtme/sarama,LastManStanding/sarama,LastManStanding/sarama,cep21/sarama,aybabtme/sarama,Neuw84/sarama,yangfan876/sarama,kraveio/sarama,Shopify/sarama,jepst/sarama,vrischmann/sarama,remerge/sarama,winlinvip/sarama,kmiku7/sarama,yangfan876/sarama,VividCortex/sarama,gyroscope-innovations/legacy_sarama,raisemarketplace/sarama,Shopify/sarama,cep21/sarama,vrischmann/sarama,HelixEducation/sarama,kraveio/sarama,jimmykuo/sarama,pronix/sarama,xiaotianlis/sarama,pronix/sarama,gyroscope-innovations/legacy_sarama,betable/sarama,jimmykuo/sarama,DataDog/sarama,VividCortex/sarama,sclasen/sarama,scalingdata/sarama,rafrombrc/sarama,mailgun/sarama,DataDog/sarama,rafrombrc/sarama,kmiku7/sarama,crast/sarama,remerge/sarama,scalingdata/sarama,mailgun/sarama,jepst/sarama,uovobw/sarama