Add 2.38 indexes to the docs
diff --git a/docs/reference/gio/gio-docs.xml b/docs/reference/gio/gio-docs.xml
index d323d3c..5e3cff1 100644
--- a/docs/reference/gio/gio-docs.xml
+++ b/docs/reference/gio/gio-docs.xml
@@ -301,6 +301,10 @@
     <title>Index of new symbols in 2.36</title>
     <xi:include href="xml/api-index-2.36.xml"><xi:fallback /></xi:include>
   </index>
+  <index id="api-index-2-38" role="2.38">
+    <title>Index of new symbols in 2.38</title>
+    <xi:include href="xml/api-index-2.38.xml"><xi:fallback /></xi:include>
+  </index>
 
   <xi:include href="xml/annotation-glossary.xml"><xi:fallback /></xi:include>
 
diff --git a/docs/reference/glib/glib-docs.xml b/docs/reference/glib/glib-docs.xml
index f44d425..62ae053 100644
--- a/docs/reference/glib/glib-docs.xml
+++ b/docs/reference/glib/glib-docs.xml
@@ -214,6 +214,10 @@
     <title>Index of new symbols in 2.36</title>
     <xi:include href="xml/api-index-2.36.xml"><xi:fallback /></xi:include>
   </index>
+  <index id="api-index-2-38" role="2.38">
+    <title>Index of new symbols in 2.38</title>
+    <xi:include href="xml/api-index-2.38.xml"><xi:fallback /></xi:include>
+  </index>
 
   <xi:include href="xml/annotation-glossary.xml"><xi:fallback /></xi:include>
 
diff --git a/docs/reference/gobject/gobject-docs.xml b/docs/reference/gobject/gobject-docs.xml
index f0a15bf..70593bf 100644
--- a/docs/reference/gobject/gobject-docs.xml
+++ b/docs/reference/gobject/gobject-docs.xml
@@ -168,6 +168,10 @@
     <title>Index of new symbols in 2.36</title>
     <xi:include href="xml/api-index-2.36.xml"><xi:fallback /></xi:include>
   </index>
+  <index id="api-index-2-38" role="2.38">
+    <title>Index of new symbols in 2.38</title>
+    <xi:include href="xml/api-index-2.38.xml"><xi:fallback /></xi:include>
+  </index>
 
   <xi:include href="xml/annotation-glossary.xml"><xi:fallback /></xi:include>