FIXUP: Fix errors found during review.

Author: burblebee

source/exec.tex

@@ -1249,7 +1249,7 @@
 Let \tcode{Sigs} be a pack of completion signatures corresponding to
 this set of completion operations, and
 let \tcode{CS} be
-the type of the expression \tcode{get_completion_signatures(Sndr, Env)()}.
+the type of the expression \tcode{get_completion_signatures<Sndr, Env>()}.
 Then \tcode{CS} is
 a specialization of
 the class template \tcode{completion_signatures}\iref{exec.cmplsig},
@@ -2098,7 +2098,7 @@
       @\libconcept{move_constructible}@<remove_cvref_t<Sndr>> &&
       @\libconcept{constructible_from}@<remove_cvref_t<Sndr>, Sndr>;
 
-  template<class Sndr, class Env>
+  template<class Sndr, class... Env>
     concept @\deflibconcept{sender_in}@ =
       @\libconcept{sender}@<Sndr> &&
       (sizeof...(Env) <= 1) &&
@@ -4579,7 +4579,7 @@
 \pnum
 Let \tcode{\placeholder{when-all-env}} be an alias template such that
 \tcode{\placeholder{when-all-env}<Env>} denotes the type
-\tcode{decltype(\exposid{mmake-\linebreak{}when-all-env}(declval<inplace_stop_source\&>(), declval<Env>()))}.
+\tcode{decltype(\exposid{make-\linebreak{}when-all-env}(declval<inplace_stop_source\&>(), declval<Env>()))}.
 
 \indexlibrarymember{\exposid{check-types}}{\exposid{impls-for}<when_all_t>}
 \begin{itemdecl}