[DOCS] Fixed typo in Watcher email actions (elastic/x-pack-elasticsearch#2829)
[DOCS] Fixed typo in Watcher email actions (elastic/x-pack-elasticsearch#2829)

Original commit: elastic/x-pack-elasticsearch@1468a76b6db66695c231680da8f85d9169611545

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