Update git submodules

* Update docs/submodules/doctor from branch 'master'
  - remove useless bash code

    Change-Id: I530ef7fcdc4f9539517c5a2718e596f77de772a6
    Signed-off-by: dongwenjuan <dong.wenjuan@zte.com.cn>

diff --git a/docs/submodules/doctor b/docs/submodules/doctor
index 9fd7012..f106c5a 160000 (submodule)
--- a/docs/submodules/doctor
+++ b/docs/submodules/doctor
@@ -1 +1 @@
-Subproject commit 9fd701278bf7d8c5b9451491bcb1a92580adc780
+Subproject commit f106c5a12724c684d747cf7f309f0ccc8b86cc61