Shorten summary text for MTP widget in USB settings

Change-Id: I1d005e9926fac59fcc225eb9200520a6ab36e823
Bug: 4335199

Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 407d159..7460542 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -1788,7 +1788,7 @@
     <!-- Storage setting.  Title for MTP checkbox [CHAR LIMIT=30]-->
     <string name="usb_mtp_title">Media device (MTP)</string>
     <!-- Storage setting.  Summary for MTP checkbox [CHAR LIMIT=NONE]-->
-    <string name="usb_mtp_summary">Lets you transfer media files using Explorer or Windows Media Player on Windows, or the Android File Transfer application on Mac (available at www.android.com/filetransfer)</string>
+    <string name="usb_mtp_summary">Lets you transfer media files on Windows, or using Android File Transfer on Mac (see www.android.com/filetransfer)</string>
     <!-- Storage setting.  Title for PTP checkbox [CHAR LIMIT=30]-->
     <string name="usb_ptp_title">Camera (PTP)</string>
     <!-- Storage setting.  Summary for PTP checkbox [CHAR LIMIT=NONE]-->