[Docs] Usermanual; update XML manifest for new chapters.
diff --git a/docs/harfbuzz-docs.xml b/docs/harfbuzz-docs.xml
index 6386335..e3f314d 100644
--- a/docs/harfbuzz-docs.xml
+++ b/docs/harfbuzz-docs.xml
@@ -40,9 +40,9 @@
       <xi:include href="usermanual-object-model.xml"/>
       <xi:include href="usermanual-buffers-language-script-and-direction.xml"/>
       <xi:include href="usermanual-fonts-and-faces.xml"/>
-      <xi:include href="usermanual-clusters.xml"/>
       <xi:include href="usermanual-opentype-features.xml"/>
-      <xi:include href="usermanual-glyph-information.xml"/>
+      <xi:include href="usermanual-clusters.xml"/>
+      <xi:include href="usermanual-utilities.xml"/>
   </part>
 
   <part>