Update docs/source/backends/javascript.rst
Update docs/source/backends/javascript.rst

Co-authored-by: memoryruins <e569e579b8d09212bce03345aed93d8d97a4c4fc@gmail.com>
mmhelloworld/idris-jvm,mmhelloworld/idris-jvm,mmhelloworld/idris-jvm,mmhelloworld/idris-jvm,mmhelloworld/idris-jvm,mmhelloworld/idris-jvm