fix failing markdown until #732 merged

iamcco/markdown-preview.nvim#732

Author: darukutsu

nvim/lua/plugins.lua

@@ -114,9 +114,10 @@ return {
   {
     "iamcco/markdown-preview.nvim",
     cmd = { "MarkdownPreviewToggle", "MarkdownPreview", "MarkdownPreviewStop" },
-    ft = { "markdown" },
-    build = function()
-      vim.fn["mkdp#util#install"]()
+    build = "cd app && npm install && git restore .",
+    ft = { "markdown", "md" },
+    init = function()
+      vim.g.mkdp_filetypes = { "markdown", "md" }
     end,
   },