Update gor replay timings
Update gor replay timings

In https://github.com/alphagov/govuk-puppet/pull/10520 we updated the
timings of the traffic replay to reflect the increasing time the
data-sync takes. This brings our docs into sync. I also added UTC into
this since it isn't clear that these timings aren't in Europe/London
time as we might expect.

alphagov/govuk-developer-docs,alphagov/govuk-developer-docs,alphagov/govuk-developer-docs,alphagov/govuk-developer-docs