[func.wrap.func][func.wrap.func.con] Fix erroneous ";" in "noexcept;;" introduced by P0771R1.

Author: Dawn Perchik

source/utilities.tex

@@ -14554,7 +14554,7 @@
     function() noexcept;
     function(nullptr_t) noexcept;
     function(const function&);
-    function(function&&) noexcept;;
+    function(function&&) noexcept;
     template<class F> function(F);
 
     function& operator=(const function&);
@@ -14676,7 +14676,7 @@
 
 \indexlibrary{\idxcode{function}!constructor}%
 \begin{itemdecl}
-function(function&& f) noexcept;;
+function(function&& f) noexcept;
 \end{itemdecl}
 
 \begin{itemdescr}