Update Basix docs FEniCS/basix@39e4c68

Author: FEniCS GitHub Actions

basix/main/polyset-order.html

@@ -161,8 +161,8 @@ <h3>Triangle</h3>
 \(xy\),
 \(x^2\),
 \(y^3\),
-\(x^2y\),
 \(xy^2\),
+\(x^2y\),
 \(x^3\),
 ...</p>
 <h3>Tetrahedron</h3>