message: Use simpler way to access type name in StarlarkDocs
  Summary: Code cleanup.
diff: @@ -121,7 +121,7 @@ fn expand_docs_derive(input: DeriveInput) -> syn::Result<proc_macro2::TokenStrea
  }
  };
  - let name = <Self as starlark::values::StarlarkValue>::get_type_value_static().as_str().to_owned();
  + let name = <Self as starlark::values::StarlarkValue>::TYPE.to_owned();
  let id = starlark::docs::Identifier {
  name,
  location: None,
  