[resultdb] Update OWNERS file.
[resultdb] Update OWNERS file.

Added ddoman and removed jchinlee.

Change-Id: I0a94fe35cf518421962377399726135f55a90d12
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/2013720
Reviewed-by: Nodir Turakulov <ef4933a197ef7b4b3f55f1bec4942aead3637a2a@chromium.org>
Commit-Queue: Nodir Turakulov <ef4933a197ef7b4b3f55f1bec4942aead3637a2a@chromium.org>
Auto-Submit: Sajjad Mirza <47fd465f34da12b7fdcc2312473b40d4ef838af7@chromium.org>

luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go