Correct return value from example.

I tested this on MIT Scheme.

Author: arthurgleckler

srfi-171.html

@@ -260,7 +260,7 @@ <h3 id="port-transduce">port-transduce</h3>
 </p>
 
 <p><code>(port-transduce (tfilter odd?) rcons read (open-input-string "1 2 3 4"))</code>
-    =&gt; (2 4)</p>
+    =&gt; (1 3)</p>
 
 <h3 id="generator-transduce">generator-transduce</h3>
 <p><code>(generator-transduce</code> <em>xform f gen</em><code>)</code>