upgrade: Add plugin section

sirainen · cmouse · commit 25b8bb8569c1 · 2025-02-16T15:42:03.000+02:00
diff --git a/docs/installation/upgrade/include/2.4-redesign.inc b/docs/installation/upgrade/include/2.4-redesign.inc
@@ -42,4 +42,9 @@ passdb sql2 {
   # This will NOT work, as it expands to nonexistent passdb_sql2_query:
   #query = SELECT ...
 }
-```
+```
+
+#### Plugin settings
+
+The `plugin { ... }` section no longer exists. Plugin settings are global
+the same as all other settings.
