message: Fix the doc tests in starlark_module
  Summary: Before we were taking the doc attributes and putting them elsewhere, so the `cargo test --docs` couldn't find them. Now put them in the documentation section AND the test section.
diff: @@ -181,6 +181,9 @@ fn process_attributes(span: Span, xs: Vec<Attribute>) -> syn::Result<ProcessedAt
  }
  } else if let Some(ds) = is_attribute_docstring(&x) {
  doc_attrs.push(ds);
  + // Important the attributes remain tagged to the function, so the test annotations
  + // are present, and thus the doc test works properly.
  + attrs.push(x);
  } else {
  attrs.push(x);
  }
  