Update git submodules

* Update docs/submodules/doctor from branch 'stable/fraser'
  - Release note for Fraser

    Change-Id: I22db79ca21c9812b8ab5ef88e9e6aa51b5f6ce05
    Signed-off-by: Tomi Juvonen <tomi.juvonen@nokia.com>
    (cherry picked from commit b109fdcabbeb234511a4ef31cf5d9403f4e60ca0)

diff --git a/docs/submodules/doctor b/docs/submodules/doctor
index d60114f..cd50072 160000 (submodule)
--- a/docs/submodules/doctor
+++ b/docs/submodules/doctor
@@ -1 +1 @@
-Subproject commit d60114f1cdb1b50de88a8d4705a5cd7ee8c1fc89
+Subproject commit cd500723c3b2de3655b2dc56ea9647f358183264