feat: update README and configuration for Neovim installation and emoji font support

Signed-off-by: juliano.barbosa <julianomb@gmail.com>

init.lua

@@ -676,7 +676,6 @@ require('lazy').setup({
             return
           end
 
-          if client and client.supports_method(vim.lsp.protocol.Methods.textDocument_documentHighlight) then
             local highlight_augroup = vim.api.nvim_create_augroup('kickstart-lsp-highlight', { clear = false })
             vim.api.nvim_create_autocmd({ 'CursorHold', 'CursorHoldI' }, {
               buffer = event.buf,