[range.utility.helpers] Move template-argument-list out of \libconcept. (#4127)

Author: Eelis

source/ranges.tex

@@ -1281,7 +1281,7 @@
 
 template<class I>
   concept @\defexposconcept{has-arrow}@ =                           // \expos
-    @\libconcept{input_iterator<I>}@ && (is_pointer_v<I> || requires(I i) { i.operator->(); });
+    @\libconcept{input_iterator}@<I> && (is_pointer_v<I> || requires(I i) { i.operator->(); });
 
 template<class T, class U>
   concept @\defexposconcept{not-same-as}@ =                         // \expos