minor: fix 'ReturnedTestCase' docstring
minor: fix 'ReturnedTestCase' docstring

Should have been done in 8db2be0b57d701cde340b0edd21b446c4e076193

maelstrom59/ArchMap,guyfawcus/ArchMap,guyfawcus/ArchMap,maelstrom59/ArchMap,guyfawcus/ArchMap