message: better docstring on generted type
diff: @@ -262,9 +262,9 @@ impl CustomDerive for CustomResource {
  derives.push("PartialEq");
  }
  let derives: Vec<Ident> = derives.iter().map(|s| format_ident!("{}", s)).collect();
  -
  + let docstring = format!(" Auto-generated type that wraps {} for the derived `CustomResource` trait", ident);
  let root_obj = quote! {
  - /// Auto-generated type the CustomResource around #ident
  + #[doc = #docstring]
  #[derive(#(#derives),*)]
  #[serde(rename_all = "camelCase")]
  #visibility struct #rootident {
  