Integration example: map workload factor to sequential subdivision of trapezoid

[klaeufer]

• this adds more pedagogical value than needlessly repeating the same computation

[gkthiruvathukal]

@klaeufer Doesn't your recent update address this? If so, please use the "resolves" feature in a commit, or just mark closed.

[klaeufer]

Fixed in https://github.com/LoyolaChicagoCode/unoapi-dpcpp-examples/commit/5c7fabc4b5f103b88b0365ab9ec8474ed659d2a9