Translating one more sentence

lang/en.json

@@ -817,6 +817,7 @@
         "PiwikWillBeUpgradedFromVersionXToVersionY": "Piwik database will be upgraded from version %1$s to the new version %2$s.",
         "TheFollowingPluginsWillBeUpgradedX": "The following plugins will be updated: %s.",
         "NoteForLargePiwikInstances": "Important notes for large Piwik installations",
+        "HighTrafficPiwikServerEnableMaintenance": "If you manage a high traffic Piwik server, we recommend to %smomentarily disable visitor Tracking and put the Piwik User Interface in maintenance mode%s.",
         "TheUpgradeProcessMayFailExecuteCommand": "If you have a large Piwik database, updates might take too long to run in the browser. In this situation, you can execute the updates from your command line: %s",
         "YouCouldManuallyExecuteSqlQueries": "If you are not able to use the command line updater and if Piwik fails to upgrade (due to a timeout of the database, a browser timeout, or any other issue), you could manually execute the SQL queries to update Piwik.",
         "ClickHereToViewSqlQueries": "Click here to view and copy the list of SQL queries that will get executed",

plugins/CoreUpdater/templates/runUpdaterAndExit_welcome.twig

@@ -43,10 +43,7 @@
         {% endif %}
         <ul>
             <li>{{ 'CoreUpdater_TheUpgradeProcessMayFailExecuteCommand'|translate(commandUpgradePiwik)|raw }}</li>
-            <li>It is also recommended for high traffic Piwik servers to <a target="_blank"
-                                                                            href='?module=Proxy&action=redirect&url={{ "http://piwik.org/faq/how-to/#faq_111"|url_encode }}'>momentarily
-                    disable visitor Tracking and put the Piwik User Interface in maintenance mode</a>.
-            </li>
+            <li>{{ 'CoreUpdater_HighTrafficPiwikServerEnableMaintenance'|translate('<a target="_blank" href="?module=Proxy&action=redirect&url=http%3A%2F%2Fpiwik.org%2Ffaq%2Fhow-to%2F%23faq_111">', '</a>')|raw }}</li>
             <li>{{ 'CoreUpdater_YouCouldManuallyExecuteSqlQueries'|translate }}<br/>
                 <a href="#titleUpdate" id="showSql" style="margin-left:20px;">› {{ 'CoreUpdater_ClickHereToViewSqlQueries'|translate }}</a>