Fix the build.  A "--" token is not just text in an XML comment.

Change-Id: Ifbc3de1dd209860f516920e5b9c1742813845380
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 0aa5b56..9dee4fd 100755
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -1303,11 +1303,11 @@
     <!-- SD card & phone storage settings item summary that is displayed when no SD card is inserted -->
     <string name="sd_insert_summary" product="default">Insert an SD card for mounting</string>
 
-    <!-- Storage setting item that will mount USB storage if it unmounted -- a user should never see this. [CHAR LIMIT=25] -->
+    <!-- Storage setting item that will mount USB storage if it unmounted. A user should never see this. [CHAR LIMIT=25] -->
     <string name="sd_mount" product="nosdcard">Mount USB storage</string>
     <!-- SD card & phone storage settings item title that will result in the phone mounting the SD card. [CHAR LIMIT=25] -->
     <string name="sd_mount" product="default">Mount SD card</string>
-    <!-- Subtext for Mount USB storage in Storage settings -- user should never see this. -->
+    <!-- Subtext for Mount USB storage in Storage settings. User should never see this. -->
     <string name="sd_mount_summary" product="nosdcard">Mount the USB storage</string>
     <!-- SD card & phone storage settings item title that will result in the phone mounting the SD card. -->
     <string name="sd_mount_summary" product="default">Mount the SD card</string>