Document: feat(sink): introduce batching strategy for file sink

[neverchanje]

This issue tracks the documentation update needed for the merged PR #18472.

Source PR URL: risingwavelabs/risingwave#18472
Source PR Merged At: 2024-10-17T09:35:07Z

If it is a major improvement that deserves a new page or a new section in the documentation, please check if we should label it as an experiment feature.

[WanYixian]

Hi @wcy-fdu , I saw parquet and json encode are both supported since risingwavelabs/risingwave#18744, could you help update the overview/release note part in risingwavelabs/risingwave#18472, thanks!
Also, please help approve these doc pr at your earliest convenience
https://github.com/risingwavelabs/risingwave-docs/pull/2718
https://github.com/risingwavelabs/risingwave-docs/pull/2719

[wcy-fdu]

Hi @wcy-fdu , I saw parquet and json encode are both supported since risingwavelabs/risingwave#18744, could you help update the overview/release note part in risingwavelabs/risingwave#18472, thanks! Also, please help approve these doc pr at your earliest convenience risingwavelabs/risingwave-docs#2718 risingwavelabs/risingwave-docs#2719

Thank you, reviewed.