MINOR: [JS] Fix docs style
MINOR: [JS] Fix docs style

Closes #12813 from domoritz/dom/docs-fixes

Authored-by: Dominik Moritz <addeb72ed7b7df5f4ba2327b9379e72239c27bb5@gmail.com>
Signed-off-by: Dominik Moritz <addeb72ed7b7df5f4ba2327b9379e72239c27bb5@gmail.com>

kou/arrow,wesm/arrow,wesm/arrow,icexelloss/arrow,apache/arrow,wesm/arrow,icexelloss/arrow,apache/arrow,kou/arrow,wesm/arrow,icexelloss/arrow,kou/arrow,wesm/arrow,wesm/arrow,icexelloss/arrow,wesm/arrow,icexelloss/arrow,apache/arrow,wesm/arrow,icexelloss/arrow,apache/arrow,kou/arrow,icexelloss/arrow,apache/arrow,kou/arrow,wesm/arrow,icexelloss/arrow,icexelloss/arrow,apache/arrow,wesm/arrow,icexelloss/arrow,icexelloss/arrow,kou/arrow,wesm/arrow,apache/arrow,icexelloss/arrow,kou/arrow,wesm/arrow,kou/arrow,apache/arrow,apache/arrow,icexelloss/arrow,apache/arrow,kou/arrow,kou/arrow,apache/arrow,icexelloss/arrow,apache/arrow,wesm/arrow,kou/arrow,kou/arrow,wesm/arrow,apache/arrow,kou/arrow,kou/arrow,apache/arrow