Update 'installer.sh'

installer.sh

@@ -321,7 +321,7 @@ chown vmail:vmail /etc/dovecot/sieve/ -R
 apt install unzip -y
 wget -q -t7 https://git.ictmaatwerk.com/VPS-scripts/Ubuntu-Mail/raw/branch/"$branch"/rainloop.sh -O /tmp/rainloop.sh
 source /tmp/rainloop.sh
-ln -s /opt/rainloop /var/www/html/"$domain"/
+ln -s /opt/rainloop /var/www/"$domain"/html/
 
 ##-----------------------##
 #    Enabling Services    #