Bug Report

Describe the bug
Three configuration parameter descriptions are missing:

1. watcher_interval
2. progress_check_interval
3. progress_check_interval_nsec

To Reproduce

./fluentbit -i tail -h   

...
watcher_interval
                                       > default: 2s, type: time

progress_check_interval
                                       > default: 2s, type: time

progress_check_interval_nsec
                                       > default: 0, type: integer
...

Expected behavior
Expect to have descriptions for all available plugin configuration parameters.

Screenshots
None.

Your Environment

• Version used: All
• Configuration: All
• Environment name and version (e.g. Kubernetes? What version?): All
• Server type and version: All
• Operating System and version: All
• Filters and plugins: in_tail

Additional context
N/A