Fix jsdoc setup script.
Fix jsdoc setup script.

Bug: skia:
Change-Id: I8f557288394c65340dce12f889b18830e0ce96f3
Reviewed-on: https://skia-review.googlesource.com/113660
Commit-Queue: Joe Gregorio <b9cf2471ff6d33504cafe8e6f356b732b2cadced@google.com>
Reviewed-by: Kevin Lubick <7cdab2cfab351f23814786ba39716e90eed69047@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot