Update git submodules

* Update docs/submodules/doctor from branch 'stable/euphrates'
  - fix referring neutron option in inspector

    Change-Id: I01173cdf301f168edebfc2ec6df82b015adebca7
    Signed-off-by: Ryota MIBU <r-mibu@cq.jp.nec.com>
    (cherry picked from commit 1bec48cd10057821828ffca3f5ecf31b853c66f7)

diff --git a/docs/submodules/doctor b/docs/submodules/doctor
index 6799dee..94d05da 160000 (submodule)
--- a/docs/submodules/doctor
+++ b/docs/submodules/doctor
@@ -1 +1 @@
-Subproject commit 6799dee0b48647e5c45fa9341d88822636895259
+Subproject commit 94d05da570a6c2f6be987ef9af8b05c66672cf56