"% used" instead of "% full" in storage donut.

This aligns the string with the summary text on the top level
Settings view.

Change-Id: If7316bff48c9174cb9f72b5bf80e13f0c7b97066
Fixes: 36873524
Test: None for this string change.
diff --git a/res/values/strings.xml b/res/values/strings.xml
index d2c8d5a..f373346 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -8604,7 +8604,7 @@
     <!-- Summary of a single storage volume total space. [CHAR LIMIT=48]-->
     <string name="storage_volume_total">Used of <xliff:g id="total" example="32GB">%1$s</xliff:g></string>
     <!-- Follows the percent of storage used by a storage volume. Exposed inside of a donut graph. [CHAR LIMIT=7]-->
-    <string name="storage_percent_full">full</string>
+    <string name="storage_percent_full">used</string>
 
 
     <!-- Label for button allow user to clear the data for an instant app -->