Problem: No test for bad use of spaces in help files.
Solution: Add checks for use of spaces in help files. Ignore intentional
spaces. (Hirohito Higashi, closesvim/vim#11952)
d950984489
Cherry-pick changes from patch 9.0.1604.
Co-authored-by: h-east <h.east.727@gmail.com>
Co-authored-by: Bram Moolenaar <Bram@vim.org>