Run the `Utilities/Sphinx/update_versions.py` script to add initial markup to every top-level document and find module. Issue: #19715
The variables recently added by commit b9d36826 (Add 'CMAKE_GCC_AR' and 'CMAKE_GCC_RANLIB' variables, 2017-03-08) are more appropriately managed with language-specific names rather than toolchain-specific names.
b9d36826