Make it a complete sentence.

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1694537 13f79535-47bb-0310-9956-ffa450edef68

src/examples/src/org/apache/poi/xssf/streaming/examples/HybridStreaming.java

@@ -15,6 +15,8 @@ import org.xml.sax.SAXException;
 
 /**
  * This demonstrates how a hybrid approach to workbook read can be taken, using 
+ * a mix of traditional XSSF and streaming one particular worksheet (perhaps one
+ * which is too big for the ordinary DOM parse).
  */
 public class HybridStreaming {