Improve Kafka appender documentation.
Improve Kafka appender documentation.

GFriedrich/logging-log4j2,GFriedrich/logging-log4j2,apache/logging-log4j2,apache/logging-log4j2,codescale/logging-log4j2,xnslong/logging-log4j2,xnslong/logging-log4j2,codescale/logging-log4j2,GFriedrich/logging-log4j2,codescale/logging-log4j2,apache/logging-log4j2,xnslong/logging-log4j2