Minor simplification in bundle_version script template
Minor simplification in bundle_version script template

`git rev-list` offers a `--count` formatting option which:

> Print a number stating how many commits would have been listed, and suppress all other output.

See `man git-rev-list`.

This is in my opinion a simpler command that the current version with `| wc -l | tr -d ' '`.

IntrepidPursuits/homebrew-liftoff,fhchina/liftoff,fousa/liftoff,IntrepidPursuits/homebrew-liftoff,liftoffcli/liftoff,fhchina/liftoff,liftoffcli/liftoff,IntrepidPursuits/homebrew-liftoff,fousa/liftoff,fousa/liftoff,liftoffcli/liftoff,fhchina/liftoff