[DOCS] Fixed typo.
[DOCS] Fixed typo.

Original commit: elastic/x-pack-elasticsearch@e09feb4863c5760b5264a0cf9e464099a9963454

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