remove @ from filename

flake.nix

@@ -53,7 +53,7 @@
 
       homeConfigurations = {
         "hblobner@devvie" = lib.homeManagerConfiguration {
-          modules = [ "./users/hblober@devvie.nix" ];
+          modules = [ ./users/hblober_at_devvie.nix ];
           pkgs = pkgsFor.x86_64-linux;
           extraSpecialArgs = { inherit inputs outputs; };
         };