New review comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/30019#discussion_r607142766

Comment:
```suggestion
	x86_64*)
		distfiles+=" https://github.com/crystal-lang/crystal/releases/download/${_bootstrapversion}/crystal-${_bootstrapversion}-${_bootstraprevision}-linux-x86_64.tar.gz"
		checksum+=" 00211ca77758e99210ec40b8c5517b086d2ff9909e089400f6d847a95e5689a4"
		;;
```