[DOCS] Remove duplicated text (#82637) (#82880)

(cherry picked from commit 376e500e9c016e2277eb8e95b5298002b10bdedd)

Co-authored-by: Daeho Ro <lamanus@outlook.kr>

docs/reference/setup/install/docker.asciidoc

@@ -511,9 +511,8 @@ includes your desired <<set-jvm-heap-size,heap size>> settings.
 For testing, you can also manually set the heap size using the `ES_JAVA_OPTS`
 environment variable. For example, to use 16GB, specify `-e
 ES_JAVA_OPTS="-Xms16g -Xmx16g"` with `docker run`. The `ES_JAVA_OPTS` variable
-overrides all other JVM options. The `ES_JAVA_OPTS` variable overrides all other
-JVM options. We do not recommend using `ES_JAVA_OPTS` in production. The
-`docker-compose.yml` file above sets the heap size to 512MB.
+overrides all other JVM options. We do not recommend using `ES_JAVA_OPTS` in 
+production. The `docker-compose.yml` file above sets the heap size to 512MB.
 
 
 ===== Pin deployments to a specific image version