Merge branch 't/18223/cat/cartesian-product-posets' into u/behackl/as…

…y/growthGroup-exponential

* t/18223/cat/cartesian-product-posets:
  deal with categories: CartesianProductPosets should be in Posets()
  change one word in docstring

src/sage/sets/cartesian_product.py

@@ -308,7 +308,7 @@ class CartesianProductPosets(CartesianProduct):
 
       - ``'components'`` -- an element is less or equal to another
         element, if less or equal is true for all its components
-        (cartesian factors).
+        (cartesian projections).
 
       - a function ``order_le(left, right)``, which performs the comparison.