Update git submodules

* Update docs/submodules/bottlenecks from branch 'master'
  - Merge "the detail page of testcase in frontend of testing-scheduler"
  - the detail page of testcase in frontend of testing-scheduler

    JIRA: BOTTLENECK-237

    the pages provide the testcase content and operations on it.

    Change-Id: I0c0dd39c9a285179f2192211487c2f9d9808c523
    Signed-off-by: Zheng Qibin <QibinZheng2014@tongji.edu.cn>

diff --git a/docs/submodules/bottlenecks b/docs/submodules/bottlenecks
index d5f7a33..d754e47 160000 (submodule)
--- a/docs/submodules/bottlenecks
+++ b/docs/submodules/bottlenecks
@@ -1 +1 @@
-Subproject commit d5f7a33fc251788320b03ae2217611f14ec68fab
+Subproject commit d754e47be0d83a4f16ea803b7fc680ba76931444