Update git submodules

* Update docs/submodules/fuel from branch 'stable/euphrates'
  - docs: Spelling correction

    Change-Id: I35076b8cd81451482944d91f3dd3337dd849ef28
    Signed-off-by: Taseer Ahmed <taseer94@gmail.com>
    (cherry picked from commit 4c0e4186721a2315ac316f5170c6cd3a8199eb6a)

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index f33cdac..03b9dd6 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit f33cdac73506ceb2093c9360bcff6a0f08472ad5
+Subproject commit 03b9dd69922f0bde68af7f6c1f0c18d9db88b25e