#3338 docs: Document how to cast values to different data types in inline stream maps Pull request opened by edgarrmondragon ## Summary by Sourcery Document explicit type casting for inline stream maps with supported functions, usage scenarios, and examples, and correct code block languages in batch documentation. Documentation: • Add a Type Casting section to stream_maps.md covering int(), float(), str(), and bool() functions with examples and usage guidelines • Update code block language in batch.md from jsonl to json for correct syntax highlighting meltano/sdk