Fix error in documentation

In the Segments page, on the Piled Segments section, the description says "A group of segments can be raised", in this context it should read "A group of segments can be piled"

Author: sdknjg8zxq

server/documents/elements/segment.html.eco

@@ -219,7 +219,7 @@ themes      : ['default', 'GitHub']
 
   <div class="piled example">
     <h4 class="ui header">Piled Segments</h4>
-    <p>A group of segments can be raised</p>
+    <p>A group of segments can be piled</p>
     <div class="ui piled segments">
       <div class="ui segment">
         <p>Top</p>