Update css.html

Missing word "in" in "Someone famous in Source Title"

docs/css.html

@@ -504,7 +504,7 @@ lead: "Fundamental HTML elements styled and enhanced with extensible classes."
 {% highlight html %}
 <blockquote>
   <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
-  <small>Someone famous <cite title="Source Title">Source Title</cite></small>
+  <small>Someone famous in <cite title="Source Title">Source Title</cite></small>
 </blockquote>
 {% endhighlight %}