Update benchmark.asciidoc
Update benchmark.asciidoc

Tidied benchmark docs
fubuki/elasticsearch,aparo/elasticsearch,fubuki/elasticsearch,aparo/elasticsearch,aparo/elasticsearch,fubuki/elasticsearch,vorce/es-metrics,fubuki/elasticsearch,fubuki/elasticsearch,aparo/elasticsearch,fubuki/elasticsearch,vorce/es-metrics,aparo/elasticsearch,vorce/es-metrics,vorce/es-metrics,aparo/elasticsearch,vorce/es-metrics