Restructure and disable linters the proper way

lua/plugins/lint.lua

@@ -1,13 +1,9 @@
 return {
-
-  { -- Linting
   'mfussenegger/nvim-lint',
   event = { 'BufReadPre', 'BufNewFile' },
   config = function()
     local lint = require 'lint'
-      lint.linters_by_ft = {
-        markdown = { 'markdownlint' },
-      }
+    lint.linters_by_ft = {}
 
     -- To allow other plugins to add linters to require('lint').linters_by_ft,
     -- instead set linters_by_ft like this:
@@ -35,7 +31,7 @@ return {
     -- lint.linters_by_ft['inko'] = nil
     -- lint.linters_by_ft['janet'] = nil
     -- lint.linters_by_ft['json'] = nil
-      lint.linters_by_ft['markdown'] = nil
+    -- lint.linters_by_ft['markdown'] = nil
     -- lint.linters_by_ft['rst'] = nil
     -- lint.linters_by_ft['ruby'] = nil
     -- lint.linters_by_ft['terraform'] = nil
@@ -51,5 +47,4 @@ return {
       end,
     })
   end,
-  },
 }