Fix baseline in lists (#170)

diff --git a/packages/flutter_markdown/lib/src/builder.dart b/packages/flutter_markdown/lib/src/builder.dart
index 4b6e721..d879aa4 100644
--- a/packages/flutter_markdown/lib/src/builder.dart
+++ b/packages/flutter_markdown/lib/src/builder.dart
@@ -264,8 +264,10 @@
           } else {
             bullet = _buildBullet(_listIndents.last);
           }
+          // See #147 and #169
           child = Row(
-            crossAxisAlignment: CrossAxisAlignment.start, // See #147
+            textBaseline: TextBaseline.alphabetic,
+            crossAxisAlignment: CrossAxisAlignment.baseline,
             children: <Widget>[
               SizedBox(
                 width: styleSheet.listIndent,