Update git submodules

* Update docs/submodules/joid from branch 'master'
  - Move help usage information to beginning of script

    If user requests the usage information (e.g. with `--help` argument),
    the information should be displayed right away. Currently the script
    first runs updates and installs of dependencies, which can take very
    long time.

    Change-Id: If5a75a98876ddeeb580764d823a11331ee8e9faf
    Signed-off-by: Martin Kulhavy <martin.kulhavy@nokia.com>

diff --git a/docs/submodules/joid b/docs/submodules/joid
index f396b99..31d7861 160000 (submodule)
--- a/docs/submodules/joid
+++ b/docs/submodules/joid
@@ -1 +1 @@
-Subproject commit f396b9912eb0f0c39aa72021d8ec4b8caf340bf2
+Subproject commit 31d78619092ba930f94f19599a677842ca66d216