Improve README headers

Author: grant

README.md

@@ -6,15 +6,21 @@ A collection of samples that demonstrate how to call G Suite APIs from Android.
 
 ### Drive
 
-- [Conflict](conflict/)
-  - Learn how to handle conflicts from the Drive API.
-- [Demos](demos/)
-  - These demos illustrate all possible ways to talk to Drive service with the
-  use of interfaces available in [Google Play Services](https://developers.google.com/android/guides/overview).
-- [Quickstart](quickstart/)
-  - Get you up and running with the [Google Drive API for Android](https://developers.google.com/drive/android/).
-- [Trash](trash/)
-  - Learn how to trash DriveResources with the Drive API.
+#### [Conflict](conflict/)
+
+Learn how to handle conflicts from the Drive API.
+
+#### [Demos](demos/)
+These demos illustrate all possible ways to talk to Drive service with the
+use of interfaces available in [Google Play Services](https://developers.google.com/android/guides/overview).
+
+#### [Quickstart](quickstart/)
+
+Get you up and running with the [Google Drive API for Android](https://developers.google.com/drive/android/).
+
+#### [Trash](trash/)
+
+Learn how to trash DriveResources with the Drive API.
 
 ## Contributing