updated README links
updated README links

Original commit: elastic/x-pack-elasticsearch@93ae0f5c1e2fc87cc20c6cb11f9109247283afe2

uschindler/elasticsearch,scorpionvicky/elasticsearch,gingerwizard/elasticsearch,strapdata/elassandra,coding0011/elasticsearch,strapdata/elassandra,gfyoung/elasticsearch,strapdata/elassandra,nknize/elasticsearch,strapdata/elassandra,gfyoung/elasticsearch,scorpionvicky/elasticsearch,gingerwizard/elasticsearch,scorpionvicky/elasticsearch,robin13/elasticsearch,coding0011/elasticsearch,gfyoung/elasticsearch,vroyer/elassandra,coding0011/elasticsearch,scorpionvicky/elasticsearch,nknize/elasticsearch,HonzaKral/elasticsearch,nknize/elasticsearch,gingerwizard/elasticsearch,gingerwizard/elasticsearch,scorpionvicky/elasticsearch,robin13/elasticsearch,HonzaKral/elasticsearch,robin13/elasticsearch,gfyoung/elasticsearch,strapdata/elassandra,GlenRSmith/elasticsearch,uschindler/elasticsearch,gingerwizard/elasticsearch,vroyer/elassandra,nknize/elasticsearch,GlenRSmith/elasticsearch,coding0011/elasticsearch,uschindler/elasticsearch,robin13/elasticsearch,HonzaKral/elasticsearch,coding0011/elasticsearch,gingerwizard/elasticsearch,vroyer/elassandra,robin13/elasticsearch,GlenRSmith/elasticsearch,gingerwizard/elasticsearch,HonzaKral/elasticsearch,gfyoung/elasticsearch,GlenRSmith/elasticsearch,GlenRSmith/elasticsearch,uschindler/elasticsearch,uschindler/elasticsearch,nknize/elasticsearch