Fix markdown textobj dependency

Move it to be lazy on Pencil

neovim/ftplugin/markdown.vim

@@ -6,5 +6,3 @@ let g:vim_markdown_new_list_item_indent = 0
 
 " Format frontmatter as YAML
 let g:vim_markdown_frontmatter = 1
-
-call textobj#sentence#init()

neovim/lua/lazy_plugins.lua

@@ -339,6 +339,17 @@ return {
     -- abolish/pencil
     {
         "https://github.com/preservim/vim-pencil",
+        dependencies = {
+            {
+                "https://github.com/preservim/vim-textobj-sentence",
+                dependencies = {
+                    { "https://github.com/kana/vim-textobj-user" },
+                },
+                config = function()
+                    vim.fn["textobj#sentence#init"]()
+                end,
+            },
+        },
         cmd = { "Pencil" },
     },
     {