Fix copy pasted code in diff element outputs

Author: mjbvz

src/vs/workbench/contrib/notebook/browser/diff/diffElementOutputs.ts

@@ -128,16 +128,20 @@ export class OutputElement extends Disposable {
 
 	private _renderSearchForMimetype(viewModel: ICellOutputViewModel, mimeType: string): IInsetRenderOutput {
 		const query = `@tag:notebookRenderer ${mimeType}`;
+
+		const p = DOM.$('p', undefined, `No renderer could be found for mimetype "${mimeType}", but one might be available on the Marketplace.`);
+		const a = DOM.$('a', { href: `command:workbench.extensions.search?%22${query}%22`, class: 'monaco-button monaco-text-button', tabindex: 0, role: 'button', style: 'padding: 8px; text-decoration: none; color: rgb(255, 255, 255); background-color: rgb(14, 99, 156); max-width: 200px;' }, `Search Marketplace`);
+
 		return {
 			type: RenderOutputType.Html,
 			source: viewModel,
-			htmlContent: `<p>No renderer could be found for mimetype "${mimeType}", but one might be available on the Marketplace.</p>
-			<a href="command:workbench.extensions.search?%22${query}%22" class="monaco-button monaco-text-button" tabindex="0" role="button" style="padding: 8px; text-decoration: none; color: rgb(255, 255, 255); background-color: rgb(14, 99, 156); max-width: 200px;">Search Marketplace</a>`
+			htmlContent: p.outerHTML + a.outerHTML,
 		};
 	}
 
 	private _renderMessage(viewModel: ICellOutputViewModel, message: string): IInsetRenderOutput {
-		return { type: RenderOutputType.Html, source: viewModel, htmlContent: `<p>${message}</p>` };
+		const el = DOM.$('p', undefined, message);
+		return { type: RenderOutputType.Html, source: viewModel, htmlContent: el.outerHTML };
 	}
 
 	private async pickActiveMimeTypeRenderer(notebookTextModel: NotebookTextModel, viewModel: ICellOutputViewModel) {