Update git submodules

* Update docs/submodules/doctor from branch 'master'
  - Merge "support pep8 check"
  - support pep8 check

    Change-Id: I3c4358694c57d27a207ae60712c44f717c8895f7
    Signed-off-by: dongwenjuan <dong.wenjuan@zte.com.cn>

diff --git a/docs/submodules/doctor b/docs/submodules/doctor
index d767217..9fd7012 160000 (submodule)
--- a/docs/submodules/doctor
+++ b/docs/submodules/doctor
@@ -1 +1 @@
-Subproject commit d767217e4ed267c585aa94fbbd3001ec0d59de8c
+Subproject commit 9fd701278bf7d8c5b9451491bcb1a92580adc780