User tar.gz instead of zip

### What version of rules_go are you using?

v0.34.0

### What version of gazelle are you using?

N/A

### What version of Bazel are you using?

5.2.0

### Does this issue reproduce with the latest releases of all the above?

Yes.

### What operating system and processor architecture are you using?

N/A

### Any other potentially useful information about your toolchain?

N/A

### What did you do?

The release notes for rules_go suggest using .zip.

### What did you expect to see?

The release notes for rules_go should suggest .tar.gz.

### What did you see instead?

Every other ruleset uses tar.gz. The archive is smaller (900kb vs 1.2MB) and it would be nice to standardise.

Start by locating the rules_go release notes and review the section that recommends using a .zip archive. Update that recommendation to .tar.gz, then verify the release notes consistently describe the archive format and size comparison accurately.

Written by the indexing model from the issue text.