message: Use GraphiQLPluginExplorer.useExplorerPlugin instead of useExplorerPlugin
diff: var [query, setQuery] = React.useState(
  'query AllFilms {\n allFilms {\n films {\n title\n }\n }\n}',
  );
  - var explorerPlugin = useExplorerPlugin({
  + var explorerPlugin = GraphiQLPluginExplorer.useExplorerPlugin({
  query: query,
  onEdit: setQuery,
  });
  