Update git submodules

* Update docs/submodules/bottlenecks from branch 'stable/fraser'
  - fix the release notes title

    It still has Danube in the titile which should be deleted

    Change-Id: Ia5075cf2d713dc9b64e1732b54e99ab604643cee
    Signed-off-by: Yang Yu <Gabriel.yuyang@huawei.com>
    (cherry picked from commit dff85c2483e71cd7a4fe1fe48e62b09923bb0ffd)

diff --git a/docs/submodules/bottlenecks b/docs/submodules/bottlenecks
index a863674..d767364 160000 (submodule)
--- a/docs/submodules/bottlenecks
+++ b/docs/submodules/bottlenecks
@@ -1 +1 @@
-Subproject commit a8636748fbf45bb3d8faa4f12e6b34cbd96ed599
+Subproject commit d76736440f852baed2e10a9b92c0557aabc041a6