[range.enumerate.sentinel] Move \expos comment to the right place

The comment was attached to the line of the definition of sentinel's
class, but it should appear on the line of the declaration of its
first constructor.

Author: burblebee

source/ranges.tex

@@ -9919,10 +9919,10 @@
   template<@\libconcept{view}@ V>
     requires @\exposconcept{range-with-movable-references}@<V>
   template<bool Const>
-  class enumerate_view<V>::@\exposidnc{sentinel}@ {                           // \expos
+  class enumerate_view<V>::@\exposid{sentinel}@ {
     using @\exposidnc{Base}@ = @\exposidnc{maybe-const}@<Const, V>;                         // \expos
     sentinel_t<@\exposidnc{Base}@> @\exposidnc{end_}@ = sentinel_t<@\exposidnc{Base}@>();                 // \expos
-    constexpr explicit @\exposid{sentinel}@(sentinel_t<@\exposid{Base}@> end);
+    constexpr explicit @\exposidnc{sentinel}@(sentinel_t<@\exposidnc{Base}@> end);          // \expos
 
   public:
     @\exposid{sentinel}@() = default;