Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "[INFO] Add Cristina as committer"
  - [INFO] Add Cristina as committer

    Change-Id: Id9262040daa037fa715c41dc44258f62ffe3f78f
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 6bb830d..25bf730 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 6bb830d62451e608cca959e5cb00cd383c8cf01d
+Subproject commit 25bf7306d1d6f66a034c1a60037c0f9b7342c0ac