[1.5.x] Fixed #20659 -- Fixed PublisherDetail in CBV topic documentation.

Thanks to tudor.prodan, susan, and Tim Graham for the report and reviews.

Backport of 88de53d4a86548016f245a1413b856aa334bc737 from master.
[1.5.x] Fixed #21834 -- Clarifed usage of template_name in tutorial part 4.

Backport of a292ad1105 from stable/1.6.x