Fix spelling error (zalando#604)

yujunz · FxKu · commit ff80fc4d0ffc · 2019-07-03T14:49:05.000+02:00
EBS, not ESB
diff --git a/docs/reference/operator_parameters.md b/docs/reference/operator_parameters.md
@@ -405,7 +405,7 @@ yet officially supported.
   empty.
 
 * **aws_region**
-  AWS region used to store ESB volumes. The default is `eu-central-1`.
+  AWS region used to store EBS volumes. The default is `eu-central-1`.
 
 * **additional_secret_mount**
   Additional Secret (aws or gcp credentials) to mount in the pod. The default is empty.
