bloblist: Move to rST format

Move this documentation to the new format.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/doc/develop/index.rst b/doc/develop/index.rst
index 83c929b..2a32645 100644
--- a/doc/develop/index.rst
+++ b/doc/develop/index.rst
@@ -9,6 +9,7 @@
 .. toctree::
    :maxdepth: 1
 
+   bloblist
    ci_testing
    commands
    devicetree/index