Update git submodules

* Update docs/submodules/doctor from branch 'stable/fraser'
  - Merge "Updated the testing doc" into stable/fraser
  - Updated the testing doc

    Remove references to bash script (code now removed), updated links

    Change-Id: I6fb66b7700ee044f125cd283645dfa07d2c63aac
    Signed-off-by: Bertrand Souville <souville@docomolab-euro.com>
    (cherry picked from commit db6684c6cbdec3d41d0e555793a275879bbb26bc)

diff --git a/docs/submodules/doctor b/docs/submodules/doctor
index 08f924e..5f539b4 160000 (submodule)
--- a/docs/submodules/doctor
+++ b/docs/submodules/doctor
@@ -1 +1 @@
-Subproject commit 08f924efd23f76b412d6b6e65e71983fdd11ceef
+Subproject commit 5f539b460279ff0df92119d5d9cb85740e4ce7f7