chapter14 ... don't trust AI to calculate code length or produce desired formatting

BTW
https://github.com/oisee/antique-toy/blob/2332213553a1a8a76e959d8ac1c6cc7be1815541/chapters/ch14-compression/draft.md?plain=1#L200C6-L200C14

this is 13 bytes, not 12.

And my other example source is not formatted in v21 pdf, but it's all together as regular text, I guess that was not intentional?