Update git submodules

* Update docs/submodules/dovetail from branch 'stable/fraser'
  - Update link to participation form

    Change-Id: Ice4ac73f8ea7253e5ad510796486afa129f26699
    Signed-off-by: Georg Kunz <georg.kunz@ericsson.com>
    (cherry picked from commit 3f842d1ae584959ec9a28c3a4bb6a9161af0fc49)

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index f5d0907..103a767 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit f5d09071d5109d9dab5c9938cf8be563e80f0b31
+Subproject commit 103a767cf391d3549acbecb6036519ff8cfc3a76