Add the vim markdown preview.

nvim/.config/nvim/init.vim

@@ -9,6 +9,7 @@ Plug 'arcticicestudio/nord-vim'
 Plug 'ap/vim-css-color'
 
 Plug 'xuhdev/vim-latex-live-preview', { 'for': 'tex' }
+Plug 'iamcco/markdown-preview.vim'
 call plug#end()
 
 set shiftwidth=4