add spellcheck, tag and luasnip completion

nvim/init.lua

@@ -342,6 +342,9 @@ return require('packer').startup(function(use)
                 extra_filetypes = { "svelte" },
             })
 
+            local spellcheck = null_ls.builtins.completion.spell.with({
+                filetypes = { "markdown" }
+            })
 
             null_ls.setup {
                 on_attach = on_attach,
@@ -350,6 +353,9 @@ return require('packer').startup(function(use)
                     eslint_diag,
                     eslint_code_actions,
                     null_ls.builtins.code_actions.gitsigns,
+                    null_ls.builtins.completion.luasnip,
+                    null_ls.builtins.completion.tags,
+                    spellcheck,
                     flake8,
                     isort,
                     black,