From 134435415e7bd62b703bbe5db05015526ed74909 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=A9my=20Scanvic?=
 <95454914+jscanvic@users.noreply.github.com>
Date: Sun, 3 Aug 2025 18:30:56 +0200
Subject: [PATCH] Change 'associative' to 'commutative' in docs describing
 union (#19706)

Thanks for the great tool!

I noticed a small typo [in the
docs](https://docs.astral.sh/ruff/rules/none-not-at-end-of-union/): it's
[commutativity](Commutative_property) that makes the order not matter in
type unions, not
[associativity](https://en.wikipedia.org/wiki/Associative_property)
which is something different.

I make the change in this PR.
---
 .../src/rules/ruff/rules/none_not_at_end_of_union.rs            | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/ruff_linter/src/rules/ruff/rules/none_not_at_end_of_union.rs b/crates/ruff_linter/src/rules/ruff/rules/none_not_at_end_of_union.rs
index a040bc9618..d69c9cd567 100644
--- a/crates/ruff_linter/src/rules/ruff/rules/none_not_at_end_of_union.rs
+++ b/crates/ruff_linter/src/rules/ruff/rules/none_not_at_end_of_union.rs
@@ -11,7 +11,7 @@ use crate::checkers::ast::Checker;
 /// Checks for type annotations where `None` is not at the end of an union.
 ///
 /// ## Why is this bad?
-/// Type annotation unions are associative, meaning that the order of the elements
+/// Type annotation unions are commutative, meaning that the order of the elements
 /// does not matter. The `None` literal represents the absence of a value. For
 /// readability, it's preferred to write the more informative type expressions first.
 ///