Remove confusing comment about closed channels

Ref #108

examples/range-over-channels/range-over-channels.go

@@ -18,8 +18,7 @@ func main() {
     // This `range` iterates over each element as it's
     // received from `queue`. Because we `close`d the
     // channel above, the iteration terminates after
-    // receiving the 2 elements. If we didn't `close` it
-    // we'd block on a 3rd receive in the loop.
+    // receiving the 2 elements.
     for elem := range queue {
         fmt.Println(elem)
     }

examples/range-over-channels/range-over-channels.hash

@@ -1,2 +1,2 @@
-e415b1f2ae531b319bb9aca69b17e7b916511744
-WN7NNh9tvh
+8b5d8a77e84c34771c5b14af014ecef3f88b2a6c
+I63ge2ISDs

public/range-over-channels

@@ -42,7 +42,7 @@ values received from a channel.</p>
             
           </td>
           <td class="code leading">
-	        <a href="http://play.golang.org/p/WN7NNh9tvh"><img title="Run code" src="play.png" class="run" /></a>
+	        <a href="http://play.golang.org/p/I63ge2ISDs"><img title="Run code" src="play.png" class="run" /></a>
             <div class="highlight"><pre><span class="kn">package</span> <span class="nx">main</span>
 </pre></div>
 
@@ -94,8 +94,7 @@ values received from a channel.</p>
             <p>This <code>range</code> iterates over each element as it&rsquo;s
 received from <code>queue</code>. Because we <code>close</code>d the
 channel above, the iteration terminates after
-receiving the 2 elements. If we didn&rsquo;t <code>close</code> it
-we&rsquo;d block on a 3rd receive in the loop.</p>
+receiving the 2 elements.</p>
 
           </td>
           <td class="code">