word-count: test that consecutive whitespaces are not words
word-count: test that consecutive whitespaces are not words

https://github.com/exercism/problem-specifications/issues/1022
https://github.com/exercism/problem-specifications/pull/1023

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