[Remoting Android] Update What's New text

Turns out I forgot to include the resize-to-fit feature in Android
client's What's New text. This CL adds it back.

Bug: 877704
Change-Id: I277c5e5eaefd3247769b7cdf17c84f95a8db0072
Reviewed-on: https://chromium-review.googlesource.com/1198565Reviewed-by: Jamie Walch <jamiewalch@chromium.org>
Commit-Queue: Yuwei Huang <yuweih@chromium.org>
Cr-Commit-Position: refs/heads/master@{#588152}

remoting/resources/remoting_strings.grd

@@ -684,6 +684,7 @@ For information about privacy, please see the Google Privacy Policy (http://goo.
         </message>
         <message name="IDS_PLAY_STORE_CHANGES" desc="List of what's changed in this release of Chrome Remote Desktop for Android. [CHAR-LIMIT=500] [NAME=play_store_changes]">
 • Added support for Android 9.0 Pie.
+• Support for resizing remote desktop resolution to match your Android device's screen.
         </message>
 
         <!-- iOS App Store metadata text. Won't be bundled into the app. -->