[website] Fix script to generate python docs for website (#14828)
[website] Fix script to generate python docs for website (#14828)

Fix an incorrectly referenced directory in the website build. I introduced the bug here: https://github.com/apache/pulsar/pull/14788.

See https://github.com/apache/pulsar/runs/5666378801?check_suite_focus=true for sample failure.
massakam/pulsar,merlimat/pulsar,massakam/pulsar,yahoo/pulsar,merlimat/pulsar,merlimat/pulsar,merlimat/pulsar,yahoo/pulsar,massakam/pulsar,yahoo/pulsar,yahoo/pulsar,merlimat/pulsar,massakam/pulsar,yahoo/pulsar,massakam/pulsar,yahoo/pulsar,merlimat/pulsar,massakam/pulsar