Inconsistent regex patterns

Inconsistent patterns are used for the entityType property.

Model:

https://community.opengroup.org/osdu/platform/system/register/-/blob/master/register-core/src/main/java/org/opengroup/osdu/register/ddms/model/RegisteredInterface.java#L54

RedirectToDDMS endpoint: https://community.opengroup.org/osdu/platform/system/register/-/blob/master/register-core/src/main/java/org/opengroup/osdu/register/api/DdmsApi.java#L186