Correct custom variable type attributes

[syohex]

repeat type should be used for them because those values are variable length string list. While list type is used for fixed length list.

This also fixes byte-compile warnings

git-link.el:320:10: Warning: in defcustom for
    ‘git-link-extensions-rendered-plain’: ‘list’ without arguments
git-link.el:329:10: Warning: in defcustom for
    ‘git-link-extensions-rendered-via-bitbucket-annotate’: ‘list’ without arguments

Reference

• https://www.gnu.org/software/emacs/manual/html_node/elisp/Composite-Types.html

[sshaw]

Thanks for the PR.

What Emacs version do you see these warnings on?

[syohex]

What Emacs version do you see these warnings on?

Development version.

$ emacs --version
GNU Emacs 32.0.50
Development version b31954283556 on master branch; build date 2026-07-06.

[sshaw]

Great, thanks!