Remove number of student reference

ideas/index.rst

@@ -19,9 +19,9 @@ and to automate things in the physical world.
 
 .. admonition:: How to participate?
 
-   Students are expected to go through the list of ideas below and join the discussion by clicking on the
+   Contributors are expected to go through the list of ideas below and join the discussion by clicking on the
    ``Discuss on forum`` button. All ideas have colorful badges for ``Complexity`` and
-   ``Size`` for making the selection process easier for students. Anyone is welcome to
+   ``Size`` for making the selection process easier for contributors. Anyone is welcome to
    introduce new ideas via the `forum gsoc-ideas tag <https://forum.beagleboard.org/t/gsoc-ideas>`_.
    Only ideas with sufficiently experienced mentor backing as deemed by the administrators will
    be added here.