Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Update release note and user guide before tagging ovp-2.2.0

    Change-Id: I1b1a1c96db933dc54242a226a6b8ea4a58147a14
    Signed-off-by: xudan <xudan16@huawei.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 69db705..06beb86 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 69db705df97f88e1078df029fa9feb3db7a7d3c1
+Subproject commit 06beb866d56d654f5f429398ef97b7a8c82884a8