Improve the doc for Conditional Expressions

[Mariatta]

Documentation

Initially reported in docs mailing list by Denilson Sá Maia

https://mail.python.org/archives/list/docs@python.org/thread/NZTUNIYEZVY2WOF3GH6TAZ32OLMKR3QO/

https://docs.python.org/3.10/reference/expressions.html

At section 6.13, it says: “Conditional expressions (sometimes called a
“ternary operator”) have the lowest priority of all Python
operations.”

However, further down below in the "6.17. Operator precedence"
section, the if-else expression has higher precedence than both lambda
and walrus. Maybe those two are not technically "operations", but
since they are under operator precedence, they are operations.

It's confusing, and it's a minor detail, but still worth fixing.

Linked PRs

• gh-97914: Reword misleading sentence on conditional expressions #139064