Use micro:bit instead of MicroBit

Author: hroncok

templates/index.html

@@ -38,8 +38,8 @@ <h2>{{ point.name }}</h2>
             noted, is licensed under [CC BY-SA] (by members of
             [Fedora Python SIG]).
 
-            The MicroBit picture is *Copyright &copy; 2016 British Broadcasting
-            Corporation*, licensed under [MIT].
+            The micro:bit picture is *Copyright &copy; 2016 British
+            Broadcasting Corporation*, licensed under [MIT].
 
             All product names, logos, and brands are property of their
             respective owners.