Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 480bbef4fbe5b2ff73b1dccff4843357fc056e0c
  - enchant -> enchant-2

    Change-Id: I182fee697e355c2d4670c45d85569e5f421eaa27
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 8440e90..480bbef 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 8440e9008cf5565de379d2c47a4269fa758bf377
+Subproject commit 480bbef4fbe5b2ff73b1dccff4843357fc056e0c