Changes 'the' to 'then' in stateful goroutine example (#427)

* Changes 'the' to 'then' in stateful goroutine example

* Run tools/build to update HTML

examples/stateful-goroutines/stateful-goroutines.go

@@ -71,7 +71,7 @@ func main() {
 	// This starts 100 goroutines to issue reads to the
 	// state-owning goroutine via the `reads` channel.
 	// Each read requires constructing a `readOp`, sending
-	// it over the `reads` channel, and the receiving the
+	// it over the `reads` channel, and then receiving the
 	// result over the provided `resp` channel.
 	for r := 0; r < 100; r++ {
 		go func() {

examples/stateful-goroutines/stateful-goroutines.hash

@@ -1,2 +1,2 @@
-9c73569ad2e16252b04fe171618db4c5fd09efb7
-5mf_P9xqBzk
+04a59d09868df58e9edf5930d38efd25cbb92861
+TBcWd-OfnaA

public/stateful-goroutines

@@ -48,7 +48,7 @@ by exactly 1 goroutine.</p>
             
           </td>
           <td class="code leading">
-            <a href="https://go.dev/play/p/5mf_P9xqBzk"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/TBcWd-OfnaA"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>
@@ -176,7 +176,7 @@ value in the case of <code>reads</code>).</p>
             <p>This starts 100 goroutines to issue reads to the
 state-owning goroutine via the <code>reads</code> channel.
 Each read requires constructing a <code>readOp</code>, sending
-it over the <code>reads</code> channel, and the receiving the
+it over the <code>reads</code> channel, and then receiving the
 result over the provided <code>resp</code> channel.</p>
 
           </td>