Update git submodules

* Update docs/submodules/doctor from branch 'master'
  - Updated from global requirements

    Change-Id: I3ba9e49daddda8d8824991591def0114dc4d6011
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/doctor b/docs/submodules/doctor
index 4c1ff36..bf4c32f 160000 (submodule)
--- a/docs/submodules/doctor
+++ b/docs/submodules/doctor
@@ -1 +1 @@
-Subproject commit 4c1ff363e85c9f49b783c99b6f45dac66b045c60
+Subproject commit bf4c32f2729d1014cf572e17a9974587053e3786