Tutorials are failing on index creation

Describe the bug
Running:

curl -o hdfs_logs_index_config.yaml https://raw.githubusercontent.com/quickwit-oss/quickwit/main/config/tutorials/hdfs-logs/index-config.yaml
./quickwit index create --index-config hdfs_logs_index_config.yaml

as described in the S3 tutorial fails with

❯ Creating index...
✘ Command failed: Api error: (code=400 Bad Request, message=Invalid config: Failed to read YAML file.: Error while parsing field `timestamp`: unknown field `fast_precision`, expected one of `description`, `input_formats`, `output_format`, `precision`, `indexed`, `stored`, `fast`.)

Caused by:
    (code=400 Bad Request, message=Invalid config: Failed to read YAML file.: Error while parsing field `timestamp`: unknown field `fast_precision`, expected one of `description`, `input_formats`, `output_format`, `precision`, `indexed`, `stored`, `fast`.)

I haven't tested it but this probably occurs elsewhere (everywhere?) in the docs.

Steps to reproduce (if applicable)
See above

Configuration:
The configuration described in the turorial.

Start with config/tutorials/hdfs-logs/index-config.yaml and the linked S3 tutorial, then run the documented curl and ./quickwit index create commands to reproduce the YAML validation error. Check the related tutorial configuration for the reported timestamp field and confirm the tutorial's index creation succeeds without the unknown-field error.