bug(#741): Formatting issue in flake.nix

The previous version of flake.nix had a formatting issue that
caused an error during evaluation. This commit fixes that.

Author: morphqdd

flake.nix

@@ -76,5 +76,6 @@
           license = licenses.mit;
           author = packageJson.author;
         };
-      });
+      }
+    );
 }