Update git submodules

* Update docs/submodules/orchestra from branch 'master'
  - Enable references for documentation

    Change-Id: I5b0ee93630ade8986a6a0eff868dcec12079cdb7
    Signed-off-by: Sofia Wallin <sofia.wallin@ericsson.com>

diff --git a/docs/submodules/orchestra b/docs/submodules/orchestra
index dca493f..2c7eea3 160000 (submodule)
--- a/docs/submodules/orchestra
+++ b/docs/submodules/orchestra
@@ -1 +1 @@
-Subproject commit dca493fb41c38de1618b64084565d5fc46c9c3cf
+Subproject commit 2c7eea345e76a641b65b567f6ebb2bf8b4f3a07b