docs issue at: Extending Shortcut

[Dragon-0609]

filePath: en/editor/extension/contributions-shortcuts.md
content:

Doesn't work
my packages.json from HelloWorld\profiles\v2\editor

{
  "name": "custom-shortcut",
  "panels": {
    "default": {
      "main": "./panel.js"
    }
  },
  "contributions": {
    "messages": {
      "redo": {
        "title": "i18n:hello.messages.redo.title",
        "methods": [
          "say-redo"
        ]
      }
    },
    "shortcuts": [
      {
        "message": "redo",
        "when": "panelName === 'custom-shortcut'",
        "win": "ctrl+y",
        "mac": "cmd+y"
      }
    ]
  }
}

[MrKylinGithub]

Do you have a window named 'custom-shortcut'?