* docs(influxdb3): update write endpoint recommendations and add Telegraf guidance
- Update write endpoint recommendations for Core/Enterprise
- Add Telegraf output plugin guidance (v1.x and v2.x)
- Improve introductory content and formatting
- Change Note to Tip for write endpoint recommendations
- Add italics to v1/v2 for clarity
* docs(influxdb3): add precision parameter comparison and format details
- Add precision comparison table across v1, v2, v3 write APIs
- Document auto precision detection with exponential notation (5e9, 5e12, 5e15)
- Add tabbed code examples for different precision values
- Update OpenAPI specs with long-form precision values only (auto, nanosecond, microsecond, millisecond, second)
- Add timestamp conversion details for internal storage
- Use long-form precision values in all examples
Note: Currently /api/v3/write_lp only supports long forms despite source code indicating short form support.
Related to #6472 - precision parameter behavior may have bugs