doc: Fix typo

Co-authored-by: Andrew Kenworthy <1712947+adwk67@users.noreply.github.com>

Author: siegfriedweber

docs/modules/opensearch/pages/usage-guide/storage-resource-configuration.adoc

@@ -19,7 +19,7 @@ nodes:
 
 In the example above, all OpenSearch nodes in the data role group store data (the location of the property `path.data`) on a `50Gi` volume.
 
-If nothing is configured in the custom resource for a certain role group, then by default each Pod has a `8Gi` large local volume mount for the data location.
+If nothing is configured in the custom resource for a certain role group, then by default each Pod has an `8Gi` large local volume mount for the data location.
 
 On role groups with only the `cluster_manager` node role, you probably want to decrease this value, but increase it on role groups with the `data` node role.