docs: Fix "Cautions" title

GitHub Markdown doesn't support the sub-section we tried to use.
Instead, make this plain text, underlined and bolded.

Change-Id: Id20275c79f06b59c39ab9a9d118ddcbea6110ffa

diff --git a/loader/LoaderAndLayerInterface.md b/loader/LoaderAndLayerInterface.md
index 8bb07d5..22d5520 100644 (file)
--- a/loader/LoaderAndLayerInterface.md
+++ b/loader/LoaderAndLayerInterface.md
@@ -1514,7 +1514,7 @@ struct my_wrapped_instance_obj_ {
 Layers that wrap dispatchable objects must follow the guidelines for creating
 new dispatchable objects (below).
 
-####### Cautions:
+<u><b>Cautions</b></u>
 
 Layers are generally discouraged from wrapping objects, because of the
 potential for incompatibilities with new extensions.  For example, let's say