dev-note-db.txt: Clarify a sentence
Change-Id: I1fa3d70e8254ae6b672cb89621ca12b9adc309ce
diff --git a/Documentation/dev-note-db.txt b/Documentation/dev-note-db.txt
index ef35d7d..0db3785 100644
--- a/Documentation/dev-note-db.txt
+++ b/Documentation/dev-note-db.txt
@@ -45,8 +45,8 @@
Account and group data is migrated to NoteDb automatically using the normal
schema upgrade process during updates. The remainder of this section details the
-configuration options that control migration of the change data, which is an
-ongoing process.
+configuration options that control migration of the change data, which is mostly
+but not fully implemented.
Change migration state is configured in `gerrit.config` with options like
`noteDb.changes.*`. These options are undocumented outside of this file, and the
