Update docs for master to remove Python 2 references (#36336)
Summary:
Fix compile error from original PR in jit_language_references.rst: https://github.com/pytorch/pytorch/pull/36114
Full details in task: https://our.intern.facebook.com/intern/tasks/?t=64776265
With pytroch 1.5+ we remove python2 support from PyTorch. All documentation under docs/ and on the pytorch.org website needs to remove Python 2 references.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/36336
Differential Revision: D21057507
Pulled By: jlin27
fbshipit-source-id: 993a763f1ecb16dad859bc02a07625ddc023645d
