Fix typo in comment

src/Vervis/Access.hs

@@ -37,7 +37,7 @@
 --         capability we grant, so that we can revoke it, and so that we can
 --         have a list of remote project/repo members.
 --     (3) Public:
---         If an actor doesn't have a role through one of the previous twp
+--         If an actor doesn't have a role through one of the previous two
 --         methods, we may still assign a role to them using automatic
 --         assignment. It's called _Public_ because it's generally meant for
 --         assigning to the general public, people who aren't listed in our