Missing HTML documentation

The python-sklearn-doc package only installs examples and is missing HTML documentation.

$ dpkg -L python-sklearn-doc | grep html
/usr/share/doc/python-sklearn-doc/html
/usr/share/doc/python-sklearn-doc/html/_static
/usr/share/doc/python-sklearn-doc/html/_static/css
/usr/share/doc/python-sklearn-doc/html/_static/js
/usr/share/doc/python-sklearn-doc/html/_static/MathJax.js
/usr/share/doc/python-sklearn-doc/html/_static/css/bootstrap-responsive.css
/usr/share/doc/python-sklearn-doc/html/_static/css/bootstrap-responsive.min.css
/usr/share/doc/python-sklearn-doc/html/_static/css/bootstrap.css
/usr/share/doc/python-sklearn-doc/html/_static/css/bootstrap.min.css
/usr/share/doc/python-sklearn-doc/html/_static/jquery.js
/usr/share/doc/python-sklearn-doc/html/_static/js/bootstrap.js
/usr/share/doc/python-sklearn-doc/html/_static/js/bootstrap.min.js

Seems like the HTML documentation was meant to be installed as indicated by the doc-base file

$ cat /usr/share/doc-base/scikit-learn
Document: scikit-learn
Title: scikit-learn User Manual
Author: scikit-learn developers
Abstract: This manual describes features of scikit-learn, provides
 examples, API reference, and a user guide.
Section: Science/Data Analysis

Format: HTML
Index: /usr/share/doc/python-sklearn-doc/stable/index.html
Files: /usr/share/doc/python-sklearn-doc/stable/*

Seems like the "stable" directory was just not installed

$ ls /usr/share/doc/python-sklearn-doc/
changelog.Debian.gz copyright examples html README.rst.gz

Additional Information

LSB release
Description: Ubuntu 20.04.2 LTS
Release: 20.04

Version
python-sklearn-doc:
  Installed: 0.22.2.post1+dfsg-5
  Candidate: 0.22.2.post1+dfsg-5
  Version table:
 *** 0.22.2.post1+dfsg-5 500
        500 http://gb.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
        500 http://gb.archive.ubuntu.com/ubuntu focal/universe i386 Packages
        100 /var/lib/dpkg/status