This function returned an error (if any) from [config.Path]. However, the
only situation in which an error could be returned was if the given path
to append to `config.Dir` was outside of the config directory. This can
only happen if the path to append would try to traverse directories (e.g.,
passing `../../cli-plugins`).
Given that we're passing a hard-coded value, that would not be the case,
so we can simplify the code to join the path directly, and don't have to
handle errors.
[config.Path]: 2d74733942/cli/config/config.go (L100-L107)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>