Fix the title on multiboard steps.
Fix the title on multiboard steps.

BUG=None
TEST=unittests

Change-Id: I966dc7b47370075497293f6f3e82cc2e6f223641
Reviewed-on: https://chromium-review.googlesource.com/200125
Reviewed-by: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>
Tested-by: Peter Mayo <3d31fdaf44dc55bb1b4f50b19df9bc879177d37a@chromium.org>

bpsinc-native/src_third_party_chromite,bpsinc-native/src_third_party_chromite,chadversary/chromiumos.chromite,bpsinc-native/src_third_party_chromite,chadversary/chromiumos.chromite