[DOC] Data Prepper scheduled s3 scan now supports filtering on start_time and range for the first scan

[graytaylor0]

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opensearch-project/data-prepper#4929. Just need to change this scheduling block from saying it does not support start_time and range (https://opensearch.org/docs/latest/data-prepper/pipelines/configuration/sources/s3/#using-scan-with-the-s3-source)

*Version: List the OpenSearch version to which this issue applies, e.g. 2.14, 2.12--2.14, or all.

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