bug: /keyboard api still returns old .keyboard_info format for /legacy keyboards

[mcdurdin]

For example, https://api.keyman.com/keyboard/dvorak shows /languages/en/example instead of /languages/en/examples, and accordingly uses the old keys format:

{
    "id": "dvorak",
    "name": "dvorak",
    "jsFilename": "dvorak.js",
    "platformSupport": {
        "desktopWeb": "full",
        "ios": "basic",
        "android": "basic"
    },
    "version": "1.0",
    "license": "mit",
    "languages": {
        "en": {
            "displayName": "English",
            "languageName": "English",
            "example": {
                "keys": "Kjd xfgiv nos,l ysb",
                "text": "The quick brown fox",
                "note": "\"The quick brown fox\""
            }
        }
    },
    "lastModifiedDate": "2023-08-11T07:10:37Z",
    "sourcePath": "legacy/d/dvorak",
    "encodings": [
        "unicode"
    ],
    "jsFileSize": 5149,
    "minKeymanVersion": "5.0",
    "helpLink": "https://help.keyman.com/keyboard/dvorak",
    "related": {
        "basic_kbddv": {
            "deprecatedBy": true
        }
    }
}