Update docs

Author: mrmrs

docs/typography/text-transform/index.html

@@ -70,6 +70,7 @@
         </div>
       </header>
       <article class="pa3 ph5-ns">
+        <h3 class="f6 ttu tracked mt0">Measure</h3>
         <p class="measure f4 f3-ns lh-copy">
           Use these classes to set the capitalization of text.
         </p>