Proc::Async.say now calls .gist, just like regular &say. lizmat++

Author: moritz

lib/Type/Proc/Async.pod

@@ -159,9 +159,10 @@ L<X::Proc::Async::MustBeStarted> exception is thrown.
 
 =head2 method say
 
-    method say(Proc::Async:D: Str(Any) $str, :$scheduler = $*SCHEDULER)
+    method say(Proc::Async:D: $output, :$scheduler = $*SCHEDULER)
 
-Write the text data in C<$str> and a newline to the standard input stream of the external
+Calls method C<gist> on the C<$output>, adds a newline, encodes it as UTF-8,
+and sends it to the standard input stream of the external
 program, encoding it as UTF-8.
 
 Returns a L<Promise|/type/Promise> that will be kept once the data has fully