[support.exception], [except.nested]: Attributes should be written after

'template<...>', not before.

Fixes #363.

Author: zygoloid

source/support.tex

@@ -2595,7 +2595,7 @@
   [[noreturn]] void rethrow_exception(exception_ptr p);
   template<class E> exception_ptr make_exception_ptr(E e) noexcept;
 
-  [[noreturn]] template <class T> void throw_with_nested(T&& t);
+  template <class T> [[noreturn]] void throw_with_nested(T&& t);
   template <class E> void rethrow_if_nested(const E& e);
 }
 \end{codeblock}
@@ -3006,7 +3006,7 @@
     exception_ptr nested_ptr() const noexcept;
   };
 
-  [[noreturn]] template<class T> void throw_with_nested(T&& t);
+  template<class T> [[noreturn]] void throw_with_nested(T&& t);
   template <class E> void rethrow_if_nested(const E& e);
 }
 \end{codeblock}
@@ -3058,7 +3058,7 @@
 \indexlibrary{\idxcode{throw_with_nested}!\idxcode{nested_exception}}
 \indexlibrary{\idxcode{nested_exception}!\idxcode{throw_with_nested}}
 \begin{itemdecl}
-[[noreturn]] template <class T> void throw_with_nested(T&& t);
+template <class T> [[noreturn]] void throw_with_nested(T&& t);
 \end{itemdecl}
 
 \begin{itemdescr}