Migrate '.vim/after' to neovim

.config/nvim/after/plugin/vim-pandoc.vim.lua

@@ -0,0 +1,9 @@
+vim.cmd([[
+au FileType pandoc call pandoc#completion#Init()
+let g:pandoc#filetypes#pandoc_markdown=0
+let g:pandoc#spell#enabled=0
+let g:pandoc#spell#default_langs=['en_us', 'nl_be']
+let g:pandoc#formatting#mode='a'
+let g:pandoc#formatting#textwidth=90
+let g:pandoc#modules#disabled = ["formatting", "dashes", "yaml", "metadata"]
+]])