mealie: prepend version with a 'v'

This fixes the update checker in mealie's admin settings.

Previously it considered the mealie version was out of date when the
version of the deployment, e.g. "1.6.0", did not match the latest
version, "v1.6.0".

pkgs/by-name/me/mealie/package.nix

@@ -112,7 +112,7 @@ in pythonpkgs.buildPythonPackage rec {
 
   postPatch = ''
     substituteInPlace mealie/__init__.py \
-      --replace-fail '__version__ = ' '__version__ = "${version}" #'
+      --replace-fail '__version__ = ' '__version__ = "v${version}" #'
   '';
 
   postInstall = let