README: recommend zstd over xz
authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Tue, 12 Apr 2022 10:27:23 +0000 (12:27 +0200)
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Tue, 12 Apr 2022 13:28:33 +0000 (15:28 +0200)
commit3983fc0227e0773404068fe224c797675a264bfe
tree9886ec35248c708ae5c4a4f4fb420c8470f60d04
parente8a688178c4875f3b67e5fbc6e56d0487258f535
README: recommend zstd over xz

git archive automatically uses gzip when --output=*.tar.gz is used, but
not for other extensions. Thus we need to invoke the compressor separately :(

It's a good pattern to use a variable for the repeating number, so let's
recommend that.
README