Update "Fake News" worksheet

[retabak]

We want to

• Make sure we have examples of all misconceptions discussed in the lesson on a workbook page
• Add to the lesson plan - calling out the possibility reporters simply misuse displays (then move Q4 & Q5 referenced below to their own page.

-- OG Issue Description

On this worksheet, Q4 and Q5 are weird curve ball questions which do not demonstrate concepts taught in this lesson. Both are examples of someone totally incorrectly interpreting a display. The lesson is about misuse of stats, not incorrect use.

Let's replace 4 and 5 with better examples that represent topics discussed in the lesson. At the moment, "intentionally using the wrong chart" and "changing the scale of the chart" are not represented.

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