[dia] docs: fix filename

[Zander Brown <zbrown src gnome org>]

commit 509f5dcb39c723c8e8abf1bea78f66754d14ebb1
Author: Zander Brown <zbrown gnome org>
Date:   Mon Apr 5 02:59:44 2021 +0100

    docs: fix filename

 docs/dia/dia-docs.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/docs/dia/dia-docs.xml b/docs/dia/dia-docs.xml
index 028b02f20..aee4425e1 100644
--- a/docs/dia/dia-docs.xml
+++ b/docs/dia/dia-docs.xml
@@ -71,7 +71,7 @@
     <xi:include href="xml/dia_svg.xml"/>
     <xi:include href="xml/dia-change.xml" />
     <xi:include href="xml/dia-object-change.xml" />
-    <xi:include href="xml/obj-state-object-change.xml"/>
+    <xi:include href="xml/dia-state-object-change.xml"/>
     <xi:include href="xml/dia-object-change-list.xml" />
     <xi:include href="xml/object-alias.xml"/>
     <xi:include href="xml/create.xml"/>