Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Sync docs from stable/danube 05ef2c4f46a9dc7a704a290eb15817c80a52c2e6"
  - Sync docs from stable/danube 05ef2c4f46a9dc7a704a290eb15817c80a52c2e6

    Change-Id: I519c002259143cc92417f34595a80889c93310e1
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 31fd7ff..4b58bc1 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 31fd7fff783ce793d51a06780c1ab424aa1d8d33
+Subproject commit 4b58bc19154552264af22e7f53099b0dee28845d