Update git submodules

* Update docs/submodules/doctor from branch 'master'
  - Merge "refactor congress inspector"
  - refactor congress inspector

    JIRA: DOCTOR-98

    Change-Id: I22fa893a1c1973fc63f994b630dd0c6a2c30e641
    Signed-off-by: dongwenjuan <dong.wenjuan@zte.com.cn>

diff --git a/docs/submodules/doctor b/docs/submodules/doctor
index dbd84d9..e52dccf 160000 (submodule)
--- a/docs/submodules/doctor
+++ b/docs/submodules/doctor
@@ -1 +1 @@
-Subproject commit dbd84d95163fb492962ebacdea7bc2a89a8b56f9
+Subproject commit e52dccf724ee05a16b6e78e79d7045f5c0ac979f