add tutorials in useful links
@@ -15,8 +15,8 @@ Gammapy
**Useful links**:
:ref:`install` |
`Source Repository <https://github.com/gammapy/gammapy/issues>`__ |
-`Issues & Ideas <https://github.com/gammapy/gammapy/issues>`__ |
`Discussions <https://github.com/gammapy/gammapy/discussions>`__ |
+`Tutorials <tutorials/index.html>`__ |
`Contact <https://gammapy.org/contact.html>`__
