adjust bullet size with start/end tag marker size

Signed-off-by: Florian Thienel <florian@thienel.org>
diff --git a/org.eclipse.vex.core/src/org/eclipse/vex/core/internal/boxes/GraphicalBullet.java b/org.eclipse.vex.core/src/org/eclipse/vex/core/internal/boxes/GraphicalBullet.java
index 5db640b..416d3ec 100644
--- a/org.eclipse.vex.core/src/org/eclipse/vex/core/internal/boxes/GraphicalBullet.java
+++ b/org.eclipse.vex.core/src/org/eclipse/vex/core/internal/boxes/GraphicalBullet.java
@@ -21,8 +21,8 @@
  */
 public class GraphicalBullet extends SimpleInlineBox {
 
-	private static final float HEIGHT_RATIO = 0.7f;
-	private static final float LIFT_RATIO = 0.15f;
+	private static final float HEIGHT_RATIO = 0.5f;
+	private static final float LIFT_RATIO = 0.1f;
 
 	private int width;
 	private int height;