Update git submodules

* Update docs/submodules/armband from branch 'stable/danube'
  - Minor corrections and updates to docs

    Change-Id: I22ae7de7f13b6347b164c318a93aae4fa2209271
    Signed-off-by: Cristina Pauna <cristina.pauna@enea.com>
    (cherry picked from commit 24d88c320689b6366d00e351dc704d874ee76dc7)

diff --git a/docs/submodules/armband b/docs/submodules/armband
index 17bda8d..06f5c26 160000 (submodule)
--- a/docs/submodules/armband
+++ b/docs/submodules/armband
@@ -1 +1 @@
-Subproject commit 17bda8d52856bece72bf2b446a30ffe4be8e2535
+Subproject commit 06f5c262f48a3bc244cc6d47e83b9f50f1730d61