Hello,
I hope you are well and happy St-Patrick's day!
From my understanding, Chronicle only supports/can handle English at the moment. For this reason, I would recommend filing for a Public Issue Tracker [1] as this could potentially allow you to have the support for what your trying to achieve on Chronicle and to potentially have a way to change it locally in the future. Note however that currently this is just a theory so it may or may not be valid for your use case.
I hope this help!
Best Regards,
Kevin
Google Cloud Platform Support, Montreal
[1] Public Issue Tracker:
https://cloud.google.com/support/docs/issue-trackers