Update lib submodule

diff --git a/doc/test-sw b/doc/test-sw
index 6ef16fd154221c871b7fd8586fcce0a2d8c5e2a7..f70b4978f69dfeca2f9bf75b6085c7725c7a464e 160000 (submodule)
--- a/doc/test-sw
+++ b/doc/test-sw
@@ -1 +1 @@
-Subproject commit 6ef16fd154221c871b7fd8586fcce0a2d8c5e2a7
+Subproject commit f70b4978f69dfeca2f9bf75b6085c7725c7a464e