Make sure to list the 7.5 migration docs.

jtibshirani · jtibshirani · commit 4375316b9daf · 2019-10-23T18:52:22.000-07:00
diff --git a/docs/reference/migration/index.asciidoc b/docs/reference/migration/index.asciidoc
@@ -11,6 +11,7 @@ For information about how to upgrade your cluster, see <<setup-upgrade>>.
 
 --
 
+include::migrate_7_5.asciidoc[]
 include::migrate_7_4.asciidoc[]
 include::migrate_7_3.asciidoc[]
 include::migrate_7_2.asciidoc[]
