mention .small in docs /cc #10102

css.html

@@ -634,7 +634,7 @@ base_url: "../"
 <h6>h6. Bootstrap heading</h6>
 {% endhighlight %}
 
-    <p>Also included with headings is an autoscaling <code>&lt;small&gt;</code> element. Use it for smaller, gray secondary text in any heading.</p>
+    <p>Create lighter, secondary text in any heading with a generic <code>&lt;small&gt;</code> tag or the <code>.small</code> class.</p>
     <div class="bs-example bs-example-type">
       <table class="table">
         <tbody>