I’m really excited about doing a pull request for changing the spec on one function in one of the elixir exercises. But honestly I have no clue as to where the exercise lives on Github. Can someone please please please give me a clue as to what I would do to find it? Please help me make this fabulous exercise better!
Thanks!
Note, many tracks prefer you discuss proposed changes before sending a PR. I have no idea what the state of the Elixir track is, though. Navy problems are synced from the problem specs repo.
As a rule you can take the platform URL of a track like https://exercism.org/tracks/fsharp, take the last part (called a track slug), and use it as the repository name to find the repository under https://github.com/exercism/fsharp 
Elixir is accepting community contributions ATM. If we’re talking about changing just the @spec property of some function because it’s wrong, feel free to open a PR. But if we’re talking about changing more, like the return values in some cases, or the arguments accepted, I would ask you to first consult the problem-specifications to figure out if the function is like it is because it’s required by that global shared problem definition.