[utilities] Add some hyphenation hints for long inline expressions

Author: tkoeppe

source/utilities.tex

@@ -1177,7 +1177,7 @@
 \pnum
 \remarks
 This constructor shall not participate in overload resolution unless
-\tcode{is_default_constructible<$T_i$>::value} is \tcode{true} for all $i$.
+\tcode{is_default_construct\-ible<$T_i$>::value} is \tcode{true} for all $i$.
 \enternote This behaviour can be implemented by a constructor template
 with default template arguments. \exitnote
 \end{itemdescr}
@@ -1212,7 +1212,7 @@
 
 \pnum
 \effects The constructor initializes the elements in the tuple with the
-corresponding value in \tcode{std::forward<UTypes>(u)}.
+corresponding value in \tcode{std::for\-ward<UTypes>(u)}.
 
 \pnum
 \remarks This constructor shall not participate in overload resolution unless