Update git submodules

* Update docs/submodules/qtip from branch 'stable/euphrates'
  - Harmonization titles of the doc of the test projects

    Change-Id: I75a0ca232a48d451be894dd08b38adb51dbddb82
    Signed-off-by: Morgan Richomme <morgan.richomme@orange.com>
    (cherry picked from commit bac65c69463f1b91ce5368ea7d214badebdbc3a1)

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 595b3be..931a3ca 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 595b3bedb76988415eae34c693cf2eac99b68b52
+Subproject commit 931a3ca2315357555bae21ec151450cc20556bb3