config: 15.1: Add missing cm_plurals in DownloadProvider

Change-Id: Ie1180d2bfa0a10b61d897dee6b269673824375cb
diff --git a/config/lineage-15.1.yaml b/config/lineage-15.1.yaml
index b409f13..29dcf40 100644
--- a/config/lineage-15.1.yaml
+++ b/config/lineage-15.1.yaml
@@ -473,6 +473,10 @@
 
   # DownloadProvider
   -
+    source:      '/packages/providers/DownloadProvider/res/values/cm_plurals.xml'
+    translation: '/%original_path%-%android_code%/%original_file_name%'
+    languages_mapping: *anchor
+  -
     source:      '/packages/providers/DownloadProvider/res/values/cm_strings.xml'
     translation: '/%original_path%-%android_code%/%original_file_name%'
     languages_mapping: *anchor