Fix typo in `#[ts(rename_all_fields)]` #1439

Job	Run time
End-to-end test example	14s
Run 'workspace' end-to-end test	18s
Check that README.md is up-to-date	7s
Run 'dependencies' end-to-end test	31s
Test ts-rs with absolute TS_RS_EXPORT_DIR	19s
Test ts-rs with --all-features	28s
Test ts-rs with TS_RS_EXPORT_DIR	25s
Test ts-rs with --no-default-features	21s
Test ts-rs with --all-features on Windows	2m 10s
	4m 53s

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