Replace backticks

Author: mattpollard

data/release-notes/enterprise-server/3-0/20.yml

@@ -4,7 +4,7 @@ sections:
     - Packages have been updated to the latest security versions.
   bugs:
     - Pre-receive hooks would fail due to undefined `PATH`.
-    - `Running `ghe-repl-setup` would return an error: `cannot create directory /data/user/elasticsearch: File exists` if the instance had previously been configured as a replica.`
+    - 'Running `ghe-repl-setup` would return an error: `cannot create directory /data/user/elasticsearch: File exists` if the instance had previously been configured as a replica.'
     - In large cluster environments, the authentication backend could be unavailable on a subset of frontend nodes.
     - Some critical services may not have been available on backend nodes in GHES Cluster.
   changes: