SwingConsolePane: fix up the persist key constant

We make it private for now, to discourage people from mucking around too
deeply. And we remove the leading slash, since it is not necessary.

Author: ctrueden

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

@@ -60,7 +60,11 @@
  */
 public class SwingConsolePane extends AbstractConsolePane<JPanel> {
 
-	public static final String LOG_FORMATTING_SETTINGS_KEY = "/log-formatting";
+	/**
+	 * Key to use when when persisting {@link LogFormatter} preferences with the
+	 * {@link PrefService}.
+	 */
+	private static final String LOG_FORMATTING_SETTINGS_KEY = "log-formatting";
 
 	@Parameter
 	private Context context;