Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Fix broken link"
  - Fix broken link

    Change-Id: I795a4cf21fc8dfd716cde7f7b6e9f1ca7e64388b
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 73c32af..cafa443 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 73c32afb3ee4a0f6fc0b5891965265992a46ca01
+Subproject commit cafa4436b284b094e2d6860a3a201587ec203a90