message: Migrate highlight.js API call in TextualBody
  Fixes
diff: @@ -265,7 +265,7 @@ export default class TextualBody extends React.Component<IBodyProps, IState> {
  // We don't use highlightElement here because we can't force language detection
  // off. It should use the one we've found in the CSS class but we'd rather pass
  // it in explicitly to make sure.
  - code.innerHTML = highlight.highlight(advertisedLang, code.textContent).value;
  + code.innerHTML = highlight.highlight(code.textContent, { language: advertisedLang }).value;
  } else if (
  SettingsStore.getValue("enableSyntaxHighlightLanguageDetection") &&
  code.parentElement instanceof HTMLPreElement
  