Add protein FEP tutorial to the index. [ci skip]

lohedges · lohedges · commit 66b5bc6ab511 · 2024-07-09T09:37:16.000+01:00
diff --git a/doc/source/tutorials/index.rst b/doc/source/tutorials/index.rst
@@ -23,3 +23,4 @@ please :doc:`ask for support. <../support>`
    crystal_water
    hydration_freenrg
    metadynamics
+   protein_mutations
