repos:
-   repo: https://github.com/ambv/black
    rev: stable
    hooks:
    - id: black
      language_version: python37
repos:
-   repo: https://github.com/ambv/black
    rev: stable
    hooks:
    - id: black
      language_version: python3
Update language_version override to fix Travis build failures
Update language_version override to fix Travis build failures

Signed-off-by: Dan Yeaw <2591e5f46f28d303f9dc027d475a5c60d8dea17a@yeaw.me>
