git aliases depend on gstat, but do not mention it

[samoylovfp]

Steps to reproduce:

• install nushell on a fresh Ubuntu
• download git-aliases to nushell config dir and add use git-ailases.nu * to the config file
• run exec nu to reload the configuration

• run git_current_branch

  What happens

  Error: nu::shell::external_command
  
  × External command failed
  ╭─[/home/fil/.config/nushell/git-aliases.nu:2:6]
  1 │ export def git_current_branch [] {
  2 │     (gstat).branch
  ·      ──┬──
  ·        ╰── Command `gstat` not found
  3 │ }
  ╰────
  help: Did you mean `gst`?

  What I expected to happen

  The script to have mentioned that gstat is a dependency and where to get it.

--

Thank you for this amazing shell!

[fdncred]

Good catch. Didn't know of this dependency. I commented on your PR.