[DOCS] Fix ordered list in Getting Started with Security (elastic/x-pack-elasticsearch#1070)
[DOCS] Fix ordered list in Getting Started with Security (elastic/x-pack-elasticsearch#1070)

Original commit: elastic/x-pack-elasticsearch@9c8929a079322ee7861c09a40f73307b2338f3fc

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