doc: update stream.pipeline() signature
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
documentation is changed or added -
commit message follows commit guidelines
The ...transforms
parameter seems optional.
Refs: https://github.com/nodejs/node/blob/e559842188f541b884abff2ffad4d2d3e1b841a6/doc/api/stream.md#streams-compatibility-with-async-generators-and-async-iterators (see the last example)