Bug 1486951 - Change accesskey for Enable DNS over HTTPS label. r=flod

MozReview-Commit-ID: HcNXyWVaNbf

Differential Revision: https://phabricator.services.mozilla.com/D4715

--HG--
extra : moz-landing-system : lando

browser/locales/en-US/browser/preferences/connection.ftl

@@ -84,7 +84,7 @@ connection-proxy-socks-remote-dns =
 
 connection-dns-over-https =
     .label = Enable DNS over HTTPS
-    .accesskey = H
+    .accesskey = b
 
 connection-dns-over-https-url = URL
     .accesskey = U