Merge pull request #1323 from run-ai/fix-ha-code

fix code block in HA doc

docs/admin/config/ha.md

@@ -31,10 +31,11 @@ Run:ai uses three third parties which are managed as Kubernetes StatefulSets:
 * **PostgreSQL**—It is not possible to configure an internal PostgreSQL to scale horizontally. If this is of importance, please contact Customer Support to understand how to connect Run:ai to an external PostgreSQL service which can be configured for high availability.
 * **Thanos**—To enable Thanos autoscaling, use the following Run:ai control-plane helm flags:
 
-```
+```bash
 --set thanos.query.autoscaling.enabled=true  
---set thanos.query.autoscaling.maxReplicas=2 
+--set thanos.query.autoscaling.maxReplicas=2
 --set thanos.query.autoscaling.minReplicas=2 
+```
 
 ## Run:ai Cluster