.circleci: Make sure to install expect for docs push (#41964)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/41964
Since we're not executing this in a docker container we should go ahead
an install expect explicitly
This is a follow up PR to #41871
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Test Plan: Imported from OSS
Reviewed By: malfet
Differential Revision: D22736738
Pulled By: seemethere
fbshipit-source-id: a56e19c1ee13c2f6e2750c2483202c1eea3b558a
