Update git submodules

* Update docs/submodules/ccsdk/distribution.git from branch 'master'
  to 15b0030cd773cfea9a8aeb8abcc15e0342aeff02
  - Add _release_notes reference in Release Note RST file

    There is no reference _release_notes in the rst file
    As a result, this file can not be linked from the global Release Note page

    Issue-ID: DOC-631

    Signed-off-by: Eric Debeau <eric.debeau@orange.com>
    Change-Id: I21614e349f4d3339a612c279fe5a08b82b56dda0

diff --git a/docs/submodules/ccsdk/distribution.git b/docs/submodules/ccsdk/distribution.git
index eef9c47..15b0030 160000 (submodule)
--- a/docs/submodules/ccsdk/distribution.git
+++ b/docs/submodules/ccsdk/distribution.git
@@ -1 +1 @@
-Subproject commit eef9c4714984a1a162fafd0a004cd83e02f20400
+Subproject commit 15b0030cd773cfea9a8aeb8abcc15e0342aeff02