gnu: julia-compat: Set file name according to standards.

* gnu/packages/julia-xyz.scm (julia-compat)[source]: Set 'file-name'
to (git-file-name ...).

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/julia-xyz.scm

@@ -32,7 +32,7 @@ (define-public julia-compat
        (uri (git-reference
              (url "https://github.com/JuliaLang/Compat.jl")
              (commit (string-append "v" version))))
-       (file-name "Compat")
+       (file-name (git-file-name name version))
        (sha256
         (base32 "01vwjr2134bzgnaxwd67knbibbhnfgnqjw7gxrp29s6y2a6j3882"))))
     (build-system julia-build-system)