Correct the EventuallyWithT and EventuallyWithTf example

[JonCrowther]

Summary

The example used for EventuallyWithT documentation doesn't actually pass.

Changes

Updated the example to be correct by swapping the times used for waitFor and tick

Motivation

I was looking at the docs and, based on the example, mistakenly set waitFor to be a shorter time than tick, which means condition never gets called. Hopefully this helps other people avoid the same mistake.

[dolmen]

LGTM