Update title for gesture education notification

Bug: 1056451
Change-Id: Ide133ebd853491aa53b2009bad7fb3208e6b6349
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2097943Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Ahmed Mehfooz <amehfooz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#749382}

ash/ash_strings.grd

@@ -447,10 +447,10 @@ This file contains the strings for ash.
         Device will be rolled back
       </message>
       <message name="IDS_GESTURE_NOTIFICATION_TITLE" desc="The title of the notification to show off new gestures.">
-        Try out new gesture navigation
+        Try new ways to navigate Chrome OS
       </message>
       <message name="IDS_GESTURE_NOTIFICATION_MESSAGE_LEARN_MORE" desc="The body of the notification to show off new gestures. This notification body links to the help page for the gestures.">
-        Use gestures to quickly switch between apps and interact with your chromebook in tablet mode.
+        Use gestures to quickly switch between apps and interact with your Chromebook in tablet mode.
       </message>
       <message name="IDS_UPDATE_NOTIFICATION_MESSAGE_LEARN_MORE" desc="The body of the notification to notify that the user should restart to get system updates. This notification body links to the info page on the update.">
         Learn more about the latest <ph name="SYSTEM_APP_NAME">$1<ex>Chromium OS</ex></ph> update