Fix plurals variable to unblock Translations Pipeline.

Bug: 19067882
(cherry picked from commit 50d23adfe26bf0cf9a34138efc299eaec04127e9)

Change-Id: I86022d6edab73dc4d11269783900710dc07a5b49
diff --git a/core/res/res/values/strings.xml b/core/res/res/values/strings.xml
index 46d1cbd..b8426d0 100644
--- a/core/res/res/values/strings.xml
+++ b/core/res/res/values/strings.xml
@@ -3173,6 +3173,7 @@
 
     <!-- This is used to express that something occurred within the last X days (e.g., Last 7 days). -->
     <plurals name="last_num_days">
+        <item quantity="one">Last <xliff:g id="count">%d</xliff:g> day</item>
         <item quantity="other">Last <xliff:g id="count">%d</xliff:g> days</item>
     </plurals>