chore(nvim): more tweaks, cleanup and docs

config/nvim/lua/plugins/ufo.lua

@@ -15,13 +15,6 @@ return {
         opts = {},
       },
     },
-    init = function()
-      vim.o.fillchars = [[eob: ,fold: ,foldopen:,foldsep: ,foldclose:]]
-      vim.o.foldcolumn = '1' -- '0' is not bad
-      vim.o.foldlevel = 99 -- Using ufo provider need a large value, feel free to decrease the value
-      vim.o.foldlevelstart = 99
-      vim.o.foldenable = true
-    end,
     opts = {
       open_fold_hl_timeout = 150,
       close_fold_kinds_for_ft = { 'imports', 'comment' },