Fixes #10274.
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
### Cron - Repository Health Check (`cron.repo_health_check`)
-- `SCHEDULE`: **every 24h**: Cron syntax for scheduling repository health check.
+- `SCHEDULE`: **@every 24h**: Cron syntax for scheduling repository health check.
- `TIMEOUT`: **60s**: Time duration syntax for health check execution timeout.
- `ARGS`: **\<empty\>**: Arguments for command `git fsck`, e.g. `--unreachable --tags`. See more on http://git-scm.com/docs/git-fsck