Fix a configuration example in gantt.md

According to the [config schema docs](https://mermaid.js.org/config/schema-docs/config-defs-gantt-diagram-config.html#tickinterval-constraints), Gantt's `tickInterval` configuration must match the following regular expression, which does **not** allow any space:

```regexp
/^([1-9][0-9]*)(millisecond|second|minute|hour|day|week|month)$/
```
This commit is contained in:
Michael Baudino
2024-10-28 14:49:34 +01:00
parent 8d0902de4c
commit d752240efc