Document schema title wrong for multiple resource types

Confirmed this issue. It happens when there are greater than 2 allowed bundles in an entity reference field.

I created Page, Blog, and Article node types, and added an entity reference field to Articles called test_entity_reference that allows referencing any of them. The expected title on /api/node/article/resource/relationships/test_entity_reference/related/schema should be Article content item, Blog content item, and Page content item, but instead it is Page content item, and Page content item.

I will open a MR with a test for this and @symbioquine's fix.