[bitnami/flink] Add line in README.md

Author: wklee610

bitnami/flink/README.md

@@ -124,7 +124,8 @@ This chart allows you to set your custom affinity using the `affinity` parameter
 
 As an alternative, use one of the preset configurations for pod affinity, pod anti-affinity, and node affinity available at the [bitnami/common](https://github.com/bitnami/charts/tree/main/bitnami/common#affinities) chart. To do so, set the `podAffinityPreset`, `podAntiAffinityPreset`, or `nodeAffinityPreset` parameters inside each of the subsections: `jobmanager`, `taskmanager`.  
 
-## Persistence
+## Persistence  
+
 > Note: If global.defaultStorageClass is not empty and persistence.enabled is true, defaultStorageClass is used. If existingClaim is set, then global.defaultStorageClass is ignored.  
 
 The [Bitnami Flink](https://github.com/bitnami/containers/tree/main/bitnami/flink) image stores the trace onto an external database. Persistent Volume Claims are used to keep the data across deployments.