[exec.sync.wait] Added missing \exposid and \libcecpt for two alias templates

Author: hewillk

source/exec.tex

@@ -4487,11 +4487,11 @@
 \begin{codeblock}
 namespace std::this_thread {
   template<execution::@\libconcept{sender_in}@<@\exposid{sync-wait-env}@> Sndr>
-    using sync-wait-result-type =
+    using @\exposid{sync-wait-result-type}@ =
       optional<execution::value_types_of_t<Sndr, @\exposid{sync-wait-env}@, @\exposid{decayed-tuple}@,
                type_identity_t>>;
 
-  template<execution::sender_in<sync-wait-env> Sndr>
+  template<execution::@\libconcept{sender_in}@<@\exposid{sync-wait-env}@> Sndr>
     using @\exposid{sync-wait-with-variant-result-type}@ =
       optional<execution::value_types_of_t<Sndr, @\exposid{sync-wait-env}@>>;
 }