Update git submodules

* Update docs/submodules/barometer from branch 'stable/danube'
  - Remove numbering

    Remove numbering from documents
    as its showing up in all headings
    in the composite documents.

    Change-Id: I9f196ff1517d5d7fce33c779a6abe9eb821847d5
    Signed-off-by: ShubhamRathi <shubhamiiitbackup@gmail.com>

diff --git a/docs/submodules/barometer b/docs/submodules/barometer
index 00c2010..2d91c60 160000 (submodule)
--- a/docs/submodules/barometer
+++ b/docs/submodules/barometer
@@ -1 +1 @@
-Subproject commit 00c20103864c255c0129db11dd27b4a8dd5465d4
+Subproject commit 2d91c6022a2d772acaabc21d3bbd7f26d9152d71