Bug 1576170 - Relocate the localization note above the strings for consistency. r=flod

Differential Revision: https://phabricator.services.mozilla.com/D43468

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

mobile/android/base/locales/en-US/android_strings.dtd

@@ -879,11 +879,11 @@ just addresses the organization to follow, e.g. "This site is run by " -->
 <!ENTITY helper_triple_readerview_open_message "Bookmark Reader View items to read them offline.">
 <!ENTITY helper_triple_readerview_open_button "Add to Bookmarks">
 
+<!-- LOCALIZATION NOTE (activity_stream_signin_title, activity_stream_signin_description, activity_stream_signin_button):
+- These labels are shown in the Activity Stream recommending the user to sign in. -->
 <!ENTITY activity_stream_signin_title "Welcome to &brandShortName;">
 <!ENTITY activity_stream_signin_description "Start syncing bookmarks, passwords, and more with your Firefox account.">
 <!ENTITY activity_stream_signin_button "Sign in">
-<!-- LOCALIZATION NOTE (activity_stream_signin_title & activity_stream_signin_description & activity_stream_signin_button):
-These labels are shown in the Activity Stream recommending the user to sign in. -->
 
 <!ENTITY activity_stream_topsites "Top Sites">
 <!-- LOCALIZATION NOTE (activity_stream_topstories): &brandPocket is the brand of the company, Pocket, that is being used to provide suggestions for articles. -->