Casing of tertiary_link missing

[matthijsmelissen]

Tertiary_link is rendered without casing.

Example: https://www.openstreetmap.org/#map=18/40.58615/-80.03983

[matthijsmelissen]

These lines are wrong:

    [zoom >= 15] { line-width: @tertiary-width-z15 - 2 * @tertiary-width-z15; }
    [zoom >= 17] { line-width: @tertiary-width-z17 - 2 * @tertiary-width-z17; }

[matthijsmelissen]

#753 will solve this.

I would prefer #753 to be in the next release, but if not, could you let me know @gravitystorm so I can write a smaller fix for this bug only?

[gravitystorm]

@math1985 This is #753 so I'm not sure what PR you meant to refer to.

[matthijsmelissen]

Oops, I meant #626.

[matthijsmelissen]

Resolved by #626.

[matthijsmelissen]

Confirmed that the linked problem is solved.