vim: add 'diffutils' to recommends

Command 'vimdiff' is not working with busybox's 'diff'.

packages/vim/build.sh

@@ -2,9 +2,11 @@ TERMUX_PKG_HOMEPAGE=https://www.vim.org
 TERMUX_PKG_DESCRIPTION="Vi IMproved - enhanced vi editor"
 TERMUX_PKG_LICENSE="VIM License"
 TERMUX_PKG_DEPENDS="ncurses, vim-runtime"
+TERMUX_PKG_RECOMMENDS="diffutils"
 # vim should only be updated every 50 releases on multiples of 50.
 # Update both vim and vim-python to the same version in one PR.
 TERMUX_PKG_VERSION=8.1.0900
+TERMUX_PKG_REVISION=1
 TERMUX_PKG_SHA256=5a7cfa4dcaa96c41b32332ea5c6b9d1f6b3dc0a5f010ce7095ed15ae37eb0f33
 TERMUX_PKG_SRCURL="https://github.com/vim/vim/archive/v${TERMUX_PKG_VERSION}.tar.gz"
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS="