[clangd] Try to fix buildbot failure after r349496

Increase timeout from 10ms to 100ms.
See http://lab.llvm.org:8011/builders/clang-ppc64be-linux/builds/27959

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@349502 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed