Update BeagleBone index

boards/beaglebone/index.rst

@@ -22,12 +22,12 @@ with links to their latest PDF-formatted System Reference Manual and the latest
 included both here and in the downloadable beagleboard-docs.pdf linked on the bottom-left
 of your screen.
 
-.. admonition:: Contributors
+.. note::
 
     This work is licensed under a `Creative Commons Attribution-ShareAlike
     4.0 International License <http://creativecommons.org/licenses/by-sa/4.0/>`__
 
-.. note::
+.. tip::
     Make sure to read and accept all the terms & condition provided in the :ref:`boards-terms-and-conditions` page. 
     
     Use of either the boards or the design materials constitutes agreement to the T&C including any