Move /src/test to /tests

tests/rustdoc-ui/doc-include-suggestion.rs

@@ -0,0 +1,10 @@
+// check-pass
+
+#[doc(include = "external-cross-doc.md")]
+//~^ WARNING unknown `doc` attribute `include`
+//~| HELP use `doc = include_str!` instead
+// FIXME(#85497): make this a deny instead so it's more clear what's happening
+//~| NOTE on by default
+//~| WARNING previously accepted
+//~| NOTE see issue #82730
+pub struct NeedMoreDocs;