[ci skip] Some more generic user guide cleanup
diff --git a/user_guide_src/source/libraries/migration.rst b/user_guide_src/source/libraries/migration.rst
index a007d5b..128796c 100644
--- a/user_guide_src/source/libraries/migration.rst
+++ b/user_guide_src/source/libraries/migration.rst
@@ -13,6 +13,13 @@
call ``$this->migration->current()`` to work out which migrations should be run.
The current version is found in **application/config/migration.php**.
+.. contents::
+ :local:
+
+.. raw:: html
+
+ <div class="custom-index container"></div>
+
********************
Migration file names
********************