Comment 2 for bug 1854297

Initially it was thought that this test was incomplete, however, as the Behat tests are not expected to be exhaustive, it is not necessary to test that pages other than the group discussion forum page (e.g. group, institution or site pages) can also be successfully designated as the customised landing page.

Thus this bug is to rename the feature file so it better reflects what is being covered and also to refocus the test description comments.