chore(demo): improve API page for ProgressSegmented documentation (#13609)

Author: nsbarsukov

projects/demo/src/pages/directives/progress-segmented/index.ts

@@ -34,7 +34,8 @@ export default class Page {
         ['#39b54a', '#ffd450', '#ffd450', '#fcc521', '#fab619', '#f8a34d', '#e01f19'],
         Array.from(
             {length: 20},
-            (_, index) => `var(--tui-chart-categorical-0${index + 1})`,
+            (_, index) =>
+                `var(--tui-chart-categorical-${String(index + 1).padStart(2, '0')})`,
         ),
     ];