Well you should be able to tell what ones are different from hovering over them, personally I'd remove index.html
all together and just have / as the root.
You can remove index.html
so it appears as domainname.com/
by editing the htaccess file.
Add the below code if this solution works for you.
RewriteEngine On # remove this, if you have it already
RewriteCond %{REQUEST_URI} index\.html
RewriteRule ^(.*)index\.html$ /$1/ [R=301,L]
Alternatively you could make visitors go to /site1.html
and /site2.html
using the redirect in the htaccess but to be honest for the sake of Analytics its rather silly since your adding a redirect on a site which some people don't like and it adds some render time on the page.