Fix directory candidates behavior

lua/cmp_path/init.lua

@@ -151,6 +151,8 @@ source._candidates = function(_, dirname, include_hidden, callback)
     }
     if type == 'directory' then
       item.kind = cmp.lsp.CompletionItemKind.Folder
+      item.word = name
+      item.label = name .. '/'
       item.insertText = name .. '/'
     end
     table.insert(items, item)