Update git submodules

* Update docs/submodules/bottlenecks from branch 'master'
  - Bugfix: json format transform for report

    JIRA: BOTTLENECK-158

    The details part of report is not json formatted.
    This patch is to fix it.

    Change-Id: I089dae0c12e14935e4b7a5e7bdbe69f00e003f98
    Signed-off-by: yuyang <Gabriel.yuyang@huawei.com>

diff --git a/docs/submodules/bottlenecks b/docs/submodules/bottlenecks
index fd9ae21..e4a1744 160000 (submodule)
--- a/docs/submodules/bottlenecks
+++ b/docs/submodules/bottlenecks
@@ -1 +1 @@
-Subproject commit fd9ae2109a6202c17a89cd544a3b74747c3b729b
+Subproject commit e4a17446f0f02d6ea950278074d88db6c09c5bb6