chore: Skip Loki-ing via story parameter

The `lokiSkip` method is deprecated.

oblador/loki#228

src/stories/index.stories.tsx

@@ -23,8 +23,7 @@ storiesOf('MdxProvider', module)
   .add('Code', () => <Code />)
   .add('Combination', () => <Combination />)
   .add('Headings', () => <Headings />)
-  // @ts-ignore
-  .lokiSkip('ImagesExternal', () => <ImagesExternal />)
+  .add('ImagesExternal', () => <ImagesExternal />, { loki: { skip: true } })
   .add('ImagesInternal', () => <ImagesInternal />)
   .add('Inline', () => <Inline />)
   .add('Lists', () => <Lists />)