Pull documentation fixes from Jonathan Corbet:
 "A few fixes for the docs tree, including one for a 4.11 build
  regression"

* tag 'docs-4.11-fixes' of git://git.lwn.net/linux:
  Documentation/sphinx: fix primary_domain configuration
  docs: Fix htmldocs build failure
  doc/ko_KR/memory-barriers: Update control-dependencies section
  pcieaer doc: update the link
  Documentation: Update path to sysrq.txt