minor MAC key code fix

Author: drom

package.json

@@ -29,7 +29,7 @@
   "homepage": "https://github.com/wavedrom/vcdrom#readme",
   "devDependencies": {
     "@drom/eslint-config": "^0.12.0",
-    "@wavedrom/doppler": "^1.12.0",
+    "@wavedrom/doppler": "^1.12.1",
     "browserify": "^17.0.0",
     "eslint": "^8.56.0",
     "http-server": "^14.1.0",