chore(docs): Fix formatting on server-configuration.md (#5059)

Signed-off-by: X-Guardian <simonheather99@gmail.com>

runatlantis.io/docs/server-configuration.md

@@ -1266,6 +1266,7 @@ This is useful when you have many projects and want to keep the pull request cle
   Namespace for emitting stats/metrics. See [stats](stats.md) section.
 
 ### `--tf-distribution`
+
   ```bash
   atlantis server --tf-distribution="terraform"
   # or