fix(markdown): handle nested lists (#910)

Signed-off-by: Panos Vagenas <35837085+vagenas@users.noreply.github.com>

tests/test_data_gen_flag.py

@@ -0,0 +1,9 @@
+import os
+
+from pydantic import TypeAdapter
+
+GEN_TEST_DATA = TypeAdapter(bool).validate_python(os.getenv("DOCLING_GEN_TEST_DATA", 0))
+
+
+def test_gen_test_data_flag():
+    assert not GEN_TEST_DATA