Update boards index

boards/index.rst

@@ -25,12 +25,13 @@ options that enable almost endless sensing and actuation expansion.
 :ref:`BeagleBoard <beagleboard-boards-home>` is a family of ARM-based, Linux-capable boards where this project
 started.
 
-.. 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