[qty.cmp][qty.pt.cmp] Use _with concepts as appropriate

docs/api_reference/src/quantities.tex

@@ -4430,10 +4430,7 @@
 
 \pnum
 In the following descriptions,
-let \tcode{@} be the \fakegrammarterm{operator}, and
-let \placeholder{C} be
-\tcode{std::\stdconcept{equality_comparable}} if \tcode{@} is \tcode{==}, and
-\tcode{std::\stdconcept{three_way_comparable}} if \tcode{@} is \tcode{<=>}.
+let \tcode{@} be the \fakegrammarterm{operator}.
 
 \indexlibrarymember{quantity}{operator==}
 \indexlibrarymember{quantity}{operator<=>}
@@ -4447,6 +4444,11 @@
 \end{itemdecl}
 
 \begin{itemdescr}
+\pnum
+Let \placeholder{C} be
+\tcode{std::\stdconcept{equality_comparable}} if \tcode{@} is \tcode{==}, and
+\tcode{std::\stdconcept{three_way_comparable}} if \tcode{@} is \tcode{<=>}.
+
 \pnum
 \effects
 Equivalent to:
@@ -4479,6 +4481,11 @@
 \end{itemdecl}
 
 \begin{itemdescr}
+\pnum
+Let \placeholder{C} be
+\tcode{std::\stdconcept{equality_comparable_with}} if \tcode{@} is \tcode{==}, and
+\tcode{std::\stdconcept{three_way_comparable_with}} if \tcode{@} is \tcode{<=>}.
+
 \pnum
 \returns
 \tcode{lhs.numerical_value_ref_in(unit) @ rhs}.
@@ -5639,8 +5646,8 @@
 \pnum
 Let \tcode{@} be the \fakegrammarterm{operator}, and
 let \placeholder{C} be
-\tcode{std::\stdconcept{equality_comparable}} if \tcode{@} is \tcode{==}, and
-\tcode{std::\stdconcept{three_way_comparable}} if \tcode{@} is \tcode{<=>}.
+\tcode{std::\stdconcept{equality_comparable_with}} if \tcode{@} is \tcode{==}, and
+\tcode{std::\stdconcept{three_way_comparable_with}} if \tcode{@} is \tcode{<=>}.
 
 \pnum
 \effects