feat: Fixed Inconsistent `entityType` regex patterns issue

Siarhei Khaletskirequested to merge
fix/inconsistent_regex_entitytype into master

Since the entityType value will be used as part of the DDMSDatasets uri, it would be better to use the pattern from the redirectToDms endpoint rather than the pattern that allows space.

Closes (#42 (closed))

Edited by Siarhei Khaletski

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