add explaination to the special handling for visual mode
add explaination to the special handling for visual mode

westim/Vim,VSCodeVim/Vim,rufusroflpunch/Vim,Chillee/Vim,Chillee/VSCodeNeovim,Chillee/Vim,VSCodeVim/Vim,rufusroflpunch/Vim,westim/Vim,westim/Vim,Chillee/VSCodeNeovim,Chillee/VSCodeNeovim