[3.10] bpo-34451: Document prompt and output toggle feature in html tutorial (GH-27105)

[miss-islington]

(cherry picked from commit 5a14f71)

Co-authored-by: Thomas [email protected]

https://bugs.python.org/issue34451

[miss-islington]

@thmsdnnr and @encukou: Status check is done, and it's a success ✅ .

[miss-islington]

@thmsdnnr and @encukou: Status check is done, and it's a success ✅ .

[miss-islington]

@thmsdnnr and @encukou: Status check is done, and it's a success ✅ .

[miss-islington]

@thmsdnnr and @encukou: Status check is done, and it's a success ✅ .

[miss-islington]

@thmsdnnr and @encukou: Status check is done, and it's a success ✅ .