[comparisons] Fix a typo in the note for std::less. (#2089)

Author: Quuxplusone

source/utilities.tex

@@ -13624,8 +13624,8 @@
 the built-in operators \tcode{<}, \tcode{>}, \tcode{<=}, \tcode{>=}.
 \begin{note} When \tcode{a < b} is well-defined
 for pointers \tcode{a} and \tcode{b} of type \tcode{P},
-this implies \tcode{(a < b) == less<P>(a, b)},
-\tcode{(a > b) == greater<P>(a, b)}, and so forth. \end{note}
+this implies \tcode{(a < b) == less<P>()(a, b)},
+\tcode{(a > b) == greater<P>()(a, b)}, and so forth. \end{note}
 For template specializations \tcode{less<void>}, \tcode{greater<void>},
 \tcode{less_equal<void>}, and \tcode{greater_equal<void>},
 if the call operator calls a built-in operator comparing pointers,