There are two points to note 1, there is a similar section in httpd.conf configuration file,
DocumentRoot"D:\wamp\WWW"
<Directory />
Options +Indexes +FollowSymLinks +ExecCGI
AllowOverride All
Order allow,deny
Allow from all
Require all granted
</Directory>
There is a third line that says + Indexes display the directory, you can not remove the display
2, remember to open configuration allows directory listing also possible that you did not, I was met, is so resolved