fix product

Author: felixpernegger

properties/P000233.md

@@ -28,5 +28,6 @@ Compare with {P42}.
 
 - $X$ satisfies this property iff its Kolmogorov quotient $\text{Kol}(X)$ does.
 - This property is hereditary with respect to clopen sets.
-- This property is preserved by arbitrary products.
+- This property is preserved by finite products.
+- This property is preserved by box products.
 - This property is preserved by arbitrary disjoint unions.