> “Smart quotes” are the ideal form of quotation marks and apostrophes,
and are commonly curly or sloped. "Dumb quotes," or straight quotes, are
a vestigial constraint from typewriters when using one key for two
different marks helped save space on a keyboard.

Also helps us be consistent. I’m going to make a PR to our marketing
site to fix these issues as well, to bring further consistency to our
copy (docs / marketing / otherwise). Starting with v0.5.0 and up,
[`smart-punctuation`](https://github.com/rust-lang/mdBook/blob/6bf7fadc295a862f1f4b2f2d4a9c4c0b1e998dff/CHANGELOG.md#config-changes)
is enabled by default, so we just need this temporarily.

Good read: https://smartquotesforsmartpeople.com/

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Release Notes:

- N/A