Update docker-swarm-rhel7.md

* Add RHEL 7.7 to title of docker swarm RHEL 7.7 runtime doc
CSVD · Jan 14, 2020 · 6a34ced · 6a34ced
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diff --git a/docs/gettingstarted/docker-swarm-rhel7.md b/docs/gettingstarted/docker-swarm-rhel7.md
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-# Install Docker CE and Swarm
+# Install Docker CE and Swarm (RHEL 7.7)
 
 * Warning: this method of installing docker on RHEL does not appear to be supported. Consider using podman instead.