cleanup Lens repo with tighter linting

Signed-off-by: Sebastian Malton <smalton@mirantis.com>

dashboard/client/components/markdown-viewer/index.ts

@@ -1 +1 @@
-export * from "./markdown-viewer"
+export * from "./markdown-viewer";

dashboard/client/components/markdown-viewer/markdown-viewer.tsx

@@ -24,7 +24,7 @@ interface OptionalProps {
 }
 
 export class MarkdownViewer extends Component<Props> {
-  render() {
+  render(): JSX.Element {
     const { className, markdown } = this.props;
     const html = DOMPurify.sanitize(marked(markdown));
     return (