ItemTextPane: improve javadoc

Author: ctrueden

src/main/java/org/scijava/ui/swing/console/ItemTextPane.java

@@ -48,10 +48,10 @@
  * {@link ItemTextPane} provides a {@link JTextPane} in a {@link JScrollPane}.
  * The content is provided as {@link Iterator} of {@link ItemTextPane.Item}.
  * ItemTextPane is used to display a large list of items, which is often
- * replaced and extented.
+ * replaced and extended.
  * <p>
- * Replacing the entire list, requires an update to the {@link StyledDocument},
- * this is performed in a worker thread, as a result the event dispatch thread
+ * Replacing the entire list requires an update to the {@link StyledDocument}.
+ * This is performed in a worker thread; as a result, the event dispatch thread
  * will not be blocked.
  * <p>
  * An {@link Item} can be tagged and incomplete. If this is the case the item