Fix data/presets/amenity/ticket_validator format

[quotquot]

data/presets/amenity/ticket_validator is not valid JSON, with trailing commas and a dangling curly bracket. This PR fixes these issues.

[tyrasd]

Thanks! FYI: The file was also missing the .json file ending (see 7efb634), that's why the tests didn't catch the issues.

[quotquot]

Thanks to you and other for this fantastic work.

I found these errors because I have a tool that processes the schema. Besides the errors fixed by the PR, my tool also choked up on emergency/water_reservoir, which has the same tags as emergency/water_tank. In fact, the tags are different in their respective preset files, i.e. data/presets/emergency/water_reservoir.json:

    {
        "emergency": "water_tank",
        "natural": "water",
        "water": "reservoir"
    }

and data/presets/emergency/water_tank.json;

    {
        "emergency": "water_tank",
        "landuse": "reservoir"
    }

but they are the same in dist/presets.json (which my tool uses), both being the latter two-key tags. Is dist/presets.json out of date or is there a weird bug somewhere that sets the wrong tags for emergency/water_reservoir (or am I misunderstanding something)? Thanks in advance.