PDS: Documentation of some API calls missing

[sven-dmlr]

In https://daimler.github.io/sechub/latest/sechub-product-delegation-server.html#section-usecases are 12 use cases documented.

Although in the REST API documentation are missing:

• Anonymous check if server is alive (here is also a typo in the uc text "PDS_UC_008-Anymous check..."
• Admin fetches job result
• Admin fetches job output stream
• Admin fetches job error stream
• Admin fetches server configuration

Please add missing documentation

[sven-dmlr]

Hi @winzj, can you please take care of this issue?

As discussed, it seems that tests need to be added so the documentation gets created as wanted.