Map Markdown tokens to same format as old parser

tests/test_markdown.py

@@ -75,7 +75,6 @@ import re
 from rich.console import Console, RenderableType
 from rich.markdown import Markdown
 
-
 re_link_ids = re.compile(r"id=[\d\.\-]*?;.*?\x1b")
 
 
@@ -104,6 +103,15 @@ def test_markdown_render():
     assert rendered_markdown == expected
 
 
+def test_simple_markdown():
+    markdown = Markdown(
+        """***hello***
+"""
+    )
+    rendered = render(markdown)
+    assert rendered == ""
+
+
 def test_inline_code():
     markdown = Markdown(
         "inline `import this` code",