count-ignores: Use `..` not `dirname` to get repo directory
count-ignores: Use `..` not `dirname` to get repo directory

Otherwise, if I run from `_test`, the `dirname` of `.` is `.`, which
means we don't successfully get the repo directory; we just get `_test`
again.

exercism/xrust,petertseng/exercism-rust,sacherjj/rust,sacherjj/rust,exercism/xrust,petertseng/exercism-rust,petertseng/exercism-rust,sacherjj/rust