runtime(doc): document proper notation of gVim, document vim-security list Commit: https://github.com/vim/vim/commit/6ffe084e6e629adcf5915286daee78058f6dd4b6 Author: Christian Brabandt <cb@256bit.org> Date: Sat Nov 18 10:10:07 2023 +0100 runtime(doc): document proper notation of gVim, document vim-security list Also, while at it, document the vim-security mailing list. closes: #13429 Signed-off-by: Christian Brabandt <cb@256bit.org>