typo [thanks K.R.]

iterators.html

@@ -312,7 +312,7 @@ rules = LazyRules()</code></pre>
 <ol>
 <li>The <code>__next__()</code> method gets called whenever someone&nbsp;&mdash;&nbsp;say, a <code>for</code> loop&nbsp;&mdash;&nbsp;calls <code>next(rules)</code>. This method will only make sense if we start at the end and work backwards. So let&#8217;s do that.
 <li>The last part of this function should look familiar, at least. The <code>build_match_and_apply_functions()</code> function hasn&#8217;t changed; it&#8217;s the same as it ever was.
-<li>The only difference is that, before returning the match and apply functions (which are stored in the tuple <var>funcs</var>), we&#8217;ve going to save them in <code>self.cache</code>.
+<li>The only difference is that, before returning the match and apply functions (which are stored in the tuple <var>funcs</var>), we&#8217;re going to save them in <code>self.cache</code>.
 </ol>
 
 <p>Moving backwards&hellip;