Update TextPane.

Author: gk-brown

sierra/src/main/java/org/httprpc/sierra/TextPane.java

@@ -155,7 +155,7 @@ private void paint(Graphics2D graphics) {
 
                 var x = switch (horizontalAlignment) {
                     case LEFT -> insets.left;
-                    case RIGHT -> insets.right;
+                    case RIGHT -> size.width - (lineWidth + insets.right);
                     case LEADING, TRAILING -> {
                         if (getComponentOrientation().isLeftToRight() ^ horizontalAlignment == HorizontalAlignment.TRAILING) {
                             yield insets.left;