[now-cli] Change `now dev` log message from `builders` to `Runtimes` (#3590)
[now-cli] Change `now dev` log message from `builders` to `Runtimes` (#3590)

* [now-cli] Change `now dev` change log message from `builders` to `runtimes`

* Capitalize

* Capitalize

zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli