docs: CHANGES.md names which #173 case needs the manual type steps

Files changed:
- CHANGES.md

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SnAJ7Z3CpVD3PRbN73QtU2

CHANGES.md

@@ -188,9 +188,10 @@ them, so the type half of this change does not arrive on its own. For each of th
 3. Copy the `sources` row of the frontmatter table into the same file.
 
 An instance that has already loosened only the schema still needs step 2. The `cite add` and
-`link-source` changes are under `tools/` and arrive with the normal upgrade. Until the steps
-are done, `lint` keeps reporting a cited comparison or source page as a schema error, exactly as
-before. Nothing that worked before breaks. Found while writing the first comparison page of an
+`link-source` changes are under `tools/` and arrive with the normal upgrade, so a source page
+citing one of its own raw files validates without the steps. Until they are done, `lint` keeps
+reporting a comparison page that carries a citation, or a source page citing another source, as
+a schema error, exactly as before. Nothing that worked before breaks. Found while writing the first comparison page of an
 instance on 7.0.0 (Gitea #173).
 
 ### wiki-ingest and wiki-manage call xref add with --rel, not the --rel-a/--rel-b removed in 4.0.0