Fix grammatical error

The sentence should say "Why we need tests" with no question mark, or "Why do we need tests?" I think keeping the question mark makes it more personal.
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Tami Olafunmiloye 2021-04-01 17:21:25 -04:00 committed by GitHub
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@ -2,7 +2,7 @@
Automated testing will be used in further tasks, and it's also widely used in real projects. Automated testing will be used in further tasks, and it's also widely used in real projects.
## Why we need tests? ## Why do we need tests?
When we write a function, we can usually imagine what it should do: which parameters give which results. When we write a function, we can usually imagine what it should do: which parameters give which results.