Updated URL to new Atlas URL (master branch) (#17674)

Now applying patch to `master` branch.
Chose to use https://atlas.eff.org/index.html instead of https://atlas.eff.org/ because links to go back to "HTTPS Everywhere Atlas" main page from the Atlas itself go to the `index.html` file.  This is also a little safer in the event of a server misconfiguration or hack.

Author: Gitoffthelawn

chromium/pages/popup/index.html

@@ -71,7 +71,7 @@ <h3 data-i18n="chrome_experimental_rules"></h3>
     </div>
 
     <footer>
-      <a id="viewAllRules" href="https://www.eff.org/https-everywhere/atlas" target="_blank" data-i18n="menu_viewAllRules"></a><br>
+      <a id="viewAllRules" href="https://atlas.eff.org/index.html" target="_blank" data-i18n="menu_viewAllRules"></a><br>
       <br>
       <a id="aboutTitle" href="https://www.eff.org/https-everywhere" target="_blank" data-i18n="about_title"></a><br>
       <br>