Update git submodules

* Update docs/submodules/doctor from branch 'master'
  - Merge "fix the bug: congress server can't be started"
  - fix the bug: congress server can't be started

    After we modify the congress.conf file, congress server can't be started.

    Change-Id: Icc3bd044a5fb7622620c42d6d25802739de875d0
    Signed-off-by: dongwenjuan <dong.wenjuan@zte.com.cn>

diff --git a/docs/submodules/doctor b/docs/submodules/doctor
index 82dccaf..a126fda 160000 (submodule)
--- a/docs/submodules/doctor
+++ b/docs/submodules/doctor
@@ -1 +1 @@
-Subproject commit 82dccaf2306779f70bf443c917120bc1992b2ee3
+Subproject commit a126fdaac45c8b0459763c89d4e69ac7e7d5172d