Fixes archive download link for kafka
Fixes archive download link for kafka

adriancole/zipkin,openzipkin/zipkin,twitter/zipkin,openzipkin/zipkin,openzipkin/zipkin,openzipkin/zipkin,twitter/zipkin,adriancole/zipkin,twitter/zipkin,openzipkin/zipkin,twitter/zipkin,adriancole/zipkin,adriancole/zipkin