Update installing-elasticsearch.md (typo fix) (#1335)

Typo fix:
`docket` -> `docker`

Co-authored-by: Brandon Morelli <[email protected]>

Author: mammuthus

deploy-manage/deploy/self-managed/installing-elasticsearch.md

@@ -65,7 +65,7 @@ Before you start, make sure that you [configure your system](/deploy-manage/depl
 
 ### {{es}} container images [elasticsearch-docker-images]
 
-You can also run {{es}} inside a docket container image. Docker container images may be downloaded from the Elastic Docker Registry.
+You can also run {{es}} inside a docker container image. Docker container images may be downloaded from the Elastic Docker Registry.
 
 You can [use Docker Compose](/deploy-manage/deploy/self-managed/install-elasticsearch-docker-compose.md) to deploy multiple nodes at once.
 
@@ -112,4 +112,4 @@ Don’t use third-party Java agents that attach to the JVM. These agents can red
 ## Third-party dependencies [dependencies-versions]
 
 :::{include} /deploy-manage/deploy/self-managed/_snippets/third-party-dependencies.md
-:::
+:::