vendor: add DocumentsUI to forked list

Change-Id: I62e76172342699a33fc351740b1334e1ffffd8c5
diff --git a/utils/aosp-forked-list b/utils/aosp-forked-list
index 9694199..11fbf66 100644
--- a/utils/aosp-forked-list
+++ b/utils/aosp-forked-list
@@ -29,6 +29,7 @@
 packages/apps/Contacts
 packages/apps/CellBroadcastReceiver
 packages/apps/Dialer
+packages/apps/DocumentsUI
 packages/apps/EmergencyInfo
 packages/apps/Messaging
 packages/apps/Nfc