Fix rpm installation (#1939)

Author: renetapopova

modules/ROOT/pages/installation/linux/rpm.adoc

@@ -24,7 +24,7 @@ Use the following as `root` to add the repository:
 [source, shell, subs="attributes"]
 ----
 rpm --import https://debian.neo4j.com/neotechnology.gpg.key
-cat <<EOF >  /etc/yum.repos.d/neo4j.repo
+cat << EOF >  /etc/yum.repos.d/neo4j.repo
 [neo4j]
 name=Neo4j RPM Repository
 baseurl=https://yum.neo4j.com/stable/{neo4j-version}