Bug 1728239 - strings for public wifi VPN promo, r=andreio,flod

Differential Revision: https://phabricator.services.mozilla.com/D123998

browser/locales/en-US/browser/newtab/asrouter.ftl

@@ -129,3 +129,16 @@ cfr-doorhanger-video-support-body = Videos on this site may not play correctly o
 cfr-doorhanger-video-support-header = Update { -brand-short-name } to play video
 cfr-doorhanger-video-support-primary-button = Update Now
   .accesskey = U
+
+## VPN promotion dialog for public Wi-Fi users
+##
+## If a user is detected to be on a public Wi-Fi network, they are given a
+## bit of info about how to improve their privacy and then offered a button
+## to the Mozilla VPN page and a link to dismiss the dialog.
+
+spotlight-public-wifi-vpn-header = Looks like you’re using public Wi-Fi
+spotlight-public-wifi-vpn-body = To hide your location and browsing activity, consider a Virtual Private Network. It will help keep you protected when browsing in public places like airports and coffee shops.
+spotlight-public-wifi-vpn-primary-button = Stay private with { -mozilla-vpn-brand-name }
+  .accesskey = S
+spotlight-public-wifi-vpn-link = Not Now
+  .accesskey = N