fixup! MB 37: Customization for the about dialog

MB 270: Update support email

browser/base/content/aboutDialog.xhtml

@@ -138,7 +138,7 @@
           <description class="text-blurb">
             <label is="text-link" href="https://mullvad.net/browser" data-l10n-id="mullvad-about-readMore"/>
           </description>
-          <description class="text-blurb" data-l10n-id="mullvad-about-feedback"/>
+          <description class="text-blurb" data-l10n-id="mullvad-about-feedback2" data-l10n-args='{"emailAddress":"support@mullvadvpn.net"}'/>
         </vbox>
       </vbox>
     </hbox>

browser/locales/en-US/browser/aboutDialogMullvad.ftl

@@ -4,5 +4,5 @@
 
 mullvad-about-desc = { -brand-short-name }  is a privacy-focused web browser developed in collaboration between <label data-l10n-name="mullvad-about-mullvadLink">Mullvad VPN</label> and the <label data-l10n-name="mullvad-about-torProjectLink">Tor Project</label>. It’s produced to minimize tracking and fingerprinting.
 mullvad-about-readMore = Read more
-mullvad-about-feedback = Help & feedback: support@mullvad.net
+mullvad-about-feedback2 = Help & feedback: { $emailAddress }
 mullvad-about-telemetryLink = Telemetry