[range.view] Change incorrect uses of "which" to "that" (#7606)

Author: ericniebler

source/ranges.tex

@@ -1511,8 +1511,8 @@
 \remarks
 Pursuant to \ref{namespace.std}, users may specialize \tcode{enable_view}
 to \tcode{true}
-for cv-unqualified program-defined types which model \libconcept{view},
-and \tcode{false} for types which do not.
+for cv-unqualified program-defined types that model \libconcept{view},
+and \tcode{false} for types that do not.
 Such specializations shall
 be usable in constant expressions\iref{expr.const} and
 have type \tcode{const bool}.