Mention the users forums on the user-guide front page

Added a note + URL pointing to the forums.

diff --git a/docs/user-guide/index.rst b/docs/user-guide/index.rst
index 34c6749ee1ff775ab36a2f341f06d941e2154d76..fa2bb8207a67dfdbacc5433d748a6caa050fe13c 100644 (file)
--- a/docs/user-guide/index.rst
+++ b/docs/user-guide/index.rst
@@ -15,6 +15,9 @@ For getting, building and installing |Gromacs|, see the
 :doc:`/install-guide/index`.
 For background on algorithms and implementations, see the
 :ref:`reference manual part <gmx-reference-manual-rst>` of the documentation.
+If you have questions not answered by these resources, 
+please visit the `GROMACS users forum <https://gromacs.bioexcel.eu/>`_
+and search for a potential answer or ask a question from the community.
 
 |GMX_MANUAL_DOI_STRING|