Update scikit-learn documentation (1.1.3)

Fixes #1864.

lib/docs/filters/sphinx/clean_html.rb

@@ -61,6 +61,7 @@ module Docs
           next if current_url.host == 'matplotlib.org'
           next if current_url.host == 'numpy.org'
           next if current_url.host == 'requests.readthedocs.io'
+          next if current_url.host == 'scikit-learn.org'
           next unless node['id'] || node.at_css('code, .classifier')
           links = []
           links << node.children.last.remove while node.children.last.try(:name) == 'a'