diff --git a/docs/source/guides/admin-guides/manage_clusters/ppc64le/diskless/customize_image/cfg_network_adapter.rst b/docs/source/guides/admin-guides/manage_clusters/ppc64le/diskless/customize_image/cfg_network_adapter.rst
index d3a6462e5..e68b5756f 100644
--- a/docs/source/guides/admin-guides/manage_clusters/ppc64le/diskless/customize_image/cfg_network_adapter.rst
+++ b/docs/source/guides/admin-guides/manage_clusters/ppc64le/diskless/customize_image/cfg_network_adapter.rst
@@ -1,8 +1,8 @@
 Customize network adapter
-============================
+=========================
 
 .. toctree::
-      :maxdepth: 2
+   :maxdepth: 2
 
    cfg_second_adapter.rst
    cfg_network.rst