[docs] [issue14097] Improve the "introduction" page of the tutorial

[Andy Maier]

Andy Maier added the comment:

> Andy: in future, please use the 'review' link to post reviews,...

Will do ... I just now discovered the "Start Review" link (I'm new here, so thanks for telling me...)

Andy

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue14097>
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