update lsp, cmp config

init.lua

@@ -271,7 +271,6 @@ mason_lspconfig.setup {
 mason_lspconfig.setup_handlers {
   function(server_name)
     require('lspconfig')[server_name].setup {
-      -- capabilities = coq.lsp_ensure_capabilities(),
       capabilities = capabilities,
       on_attach = on_attach,
       settings = servers[server_name],
@@ -332,6 +331,8 @@ cmp.setup {
     end,
   },
   mapping = cmp.mapping.preset.insert {
+    ['<C-n>'] = cmp.mapping.select_next_item(),
+    ['<C-p>'] = cmp.mapping.select_prev_item(),
     ['<C-d>'] = cmp.mapping.scroll_docs(-4),
     ['<C-f>'] = cmp.mapping.scroll_docs(4),
     ['<C-Space>'] = cmp.mapping.complete(),
@@ -361,6 +362,7 @@ cmp.setup {
   sources = {
     { name = 'nvim_lsp' },
     { name = 'luasnip' },
+    { name = 'cmp_tabnine' },
   },
 }