Fix string typo for "fail_to_remove_account".

Bug: 113624519
Test: manually by TestDPC
Change-Id: I7cd88d9738f2fc9c804191aef4998e45778421ef

Author: yuemingw

app/src/main/res/values/strings.xml

@@ -62,7 +62,7 @@
     <string name="fail_to_add_account">Failed to add account</string>
     <string name="remove_account">Remove account</string>
     <string name="success_remove_account">Account removed: %s</string>
-    <string name="fail_to_remove_account">Failed to add account: %s</string>
+    <string name="fail_to_remove_account">Failed to remove account: %s</string>
     <string name="no_accounts_available">No accounts available.</string>
     <string name="icon">Icon</string>
     <string name="manage_apps">Manage applications</string>