vesktop: fix darwin extension .App -> .app (#353221)

Author: Scrumplex

pkgs/by-name/ve/vesktop/package.nix

@@ -125,7 +125,7 @@ stdenv.mkDerivation (finalAttrs: {
     ''
     + lib.optionalString stdenv.hostPlatform.isDarwin ''
       mkdir -p $out/{Applications,bin}
-      mv dist/mac*/Vesktop.App $out/Applications
+      mv dist/mac*/Vesktop.app $out/Applications/Vesktop.app
     ''
     + ''
       runHook postInstall