doc - Update minor details in the doc
Update minor details in the doc:
- partial field for some responses
- filter example
- rename `duorc` by `ibm/duorc` instead (even though the hub redirects to the correct organization, datasets-server API does not)

Note.- I haven't update yet `Server infrastructure` page, I will do it in another PR 
doc - Update minor details in the doc: Update minor details in the doc:
- partial field for some responses
- filter example
- rename `duorc` by `ibm/duorc` instead (even though the hub redirects to the correct organization, datasets-server API does not)

Note.- I haven't update yet `Server infrastructure` page, I will do it in another PR 