Human Face Javadoc corrected

Comparison/src/main/java/cz/fidentis/analyst/face/HumanFace.java

@@ -14,9 +14,9 @@ import java.io.InputStream;
  * <p>
  * Changes in the human face and its data structures (e.g., mesh model, etc.)
  * can be monitored by listeners. Listeners have to implement the 
- * {@link cz.fidentis.analyst.face.HumanFaceListener} iterface and they have to 
- * register using the {@link cz.fidentis.analyst.face.HumanFace#registerListener} method.
- * Then the are informed about changes in the human automatically via methods 
+ * {@link cz.fidentis.analyst.face.HumanFaceListener} iterface and they have to be
+ * registered using the {@link cz.fidentis.analyst.face.HumanFace#registerListener} method.
+ * Then they are informed about changes in the human automatically via methods 
  * prescribed by the interface.
  * </p>
  * <p>