Justify guarding try_lint in readonly buffers

Co-authored-by: Robin Gruyters <2082795+rgruyters@users.noreply.github.com>

lua/kickstart/plugins/lint.lua

@@ -47,6 +47,9 @@ return {
       vim.api.nvim_create_autocmd({ 'BufEnter', 'BufWritePost', 'InsertLeave' }, {
         group = lint_augroup,
         callback = function()
+          -- Only run the linter in buffers that you can modify in order to
+          -- avoid superfluous noise, notably within the handy LSP pop-ups that
+          -- describe the hovered symbol using Markdown.
           if vim.opt_local.modifiable:get() then
             lint.try_lint()
           end