spec_examples.md: refer to backup_config.md
@@ -72,6 +72,8 @@ spec:
awsSecret: <aws-secret-name>
```
+See [backup config](./backup_config.md) for how to set up S3 related configurations.
+
### Three members cluster that restores from previous PV backup
If a cluster `cluster-a` was created with backup, but deleted or failed later on,
