Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Add project introduction"
  - Add project introduction

    Change-Id: I5d0553f0ccec571f9db90b2fd8f25f0941f00b03
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 93b0998..dc36e77 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 93b09986417405c7d16d26f947f57b8dc9af3196
+Subproject commit dc36e77263438c6e12cffc374da10e6abf46739b