Update complexity level for `shapes_digital_clock`

examples/examples_list.txt

@@ -60,7 +60,7 @@ shapes;shapes_rounded_rectangle_drawing;★★★☆;2.5;2.5;2018;2025;"Vlad Adr
 shapes;shapes_top_down_lights;★★★★;4.2;4.2;2022;2025;"Jeffery Myers";@JeffM2501
 shapes;shapes_rectangle_advanced;★★★★;5.5;5.5;2024;2025;"Everton Jr.";@evertonse
 shapes;shapes_splines_drawing;★★★☆;5.0;5.0;2023;2025;"Ramon Santamaria";@raysan5
-shapes;shapes_digital_clock;★★☆☆;5.5;5.6;2025;2025;"Hamza RAHAL";@hmz-rhl
+shapes;shapes_digital_clock;★★★★;5.5;5.6;2025;2025;"Hamza RAHAL";@hmz-rhl
 shapes;shapes_double_pendulum;★★☆☆;5.5;5.5;2025;2025;"JoeCheong";@Joecheong2006
 textures;textures_logo_raylib;★☆☆☆;1.0;1.0;2014;2025;"Ramon Santamaria";@raysan5
 textures;textures_srcrec_dstrec;★★★☆;1.3;1.3;2015;2025;"Ramon Santamaria";@raysan5

examples/shapes/shapes_digital_clock.c

@@ -2,7 +2,7 @@
 *
 *   raylib [shapes] example - digital clock
 *
-*   Example complexity rating: [★★☆☆] 2/4
+*   Example complexity rating: [★★★★] 4/4
 *
 *   Example originally created with raylib 5.5, last time updated with raylib 5.6
 *