fabric.mod.json generated incorrectly

[dexman545]

Idea 2019.3
1.3.2-earth.23

Places "20w11a" in version instead of the proper semver "1.16-alpha.20.11.a"
Places trailing comma after minecraft:20w11a (quotations omitted)
Places minecraft:20w11a on same line as fabric:* (quotations omitted)

[Earthcomputer]

Thanks for your report! This issue will be addressed in the upstream version: minecraft-dev#733