EXERCISE_README_INSERT: Remove leading 'x' from repository name
EXERCISE_README_INSERT: Remove leading 'x' from repository name

https://github.com/exercism/meta/issues/1

Because nobody has reviewed https://github.com/exercism/rust/pull/308
yet.

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