maybe fix

tests/test_markdownviewer.py

@@ -82,6 +82,7 @@ async def test_headings_that_look_like_they_contain_markup(text: str) -> None:
 
     document = f"# {text}"
     async with MarkdownStringViewerApp(document).run_test() as pilot:
+        await pilot.pause()
         assert pilot.app.query_one(MD.MarkdownH1)._content == Content(text)
         toc_tree = pilot.app.query_one(MD.MarkdownTableOfContents).query_one(Tree)
         # The toc label looks like "I {text}" but the I is styled so we drop it.