Update browser links to HTTPS (#5788)

* Update recommended browser links to https

* Update browser URLs to https

react/features/unsupported-browser/components/browserLinks.js

  *
  * @type {string}
  */
-export const CHROME = 'http://google.com/chrome';
+export const CHROME = 'https://www.google.com/chrome/';
 
 /**
  * The URL at which Chromium is available for download.
  *
  * @type {string}
  */
-export const CHROMIUM = 'http://www.chromium.org/';
+export const CHROMIUM = 'https://www.chromium.org/';
 
 /**
  * The URL at which Microsoft Edge is available for download.
  *
  * @type {string}
  */
-export const FIREFOX = 'http://www.getfirefox.com/';
+export const FIREFOX = 'https://www.getfirefox.com/';
 
 /**
  * The URL at which Safari is available for download.

static/recommendedBrowsers.html

             We recommend to try with the latest version of 
             <a
                 className = 'unsupported-desktop-browser__link'
-                href = 'http://google.com/chrome' >Chrome</a>&nbsp;or&nbsp;
+                href = 'https://www.google.com/chrome/' >Chrome</a>&nbsp;or&nbsp;
             <a
                 class = 'unsupported-desktop-browser__link'
-                href = 'http://www.chromium.org/'>Chromium</a>
+                href = 'https://www.chromium.org/'>Chromium</a>
         </p>
     </div>
 </body>