Fix: Update draw_rectangle_rounded_lines in gui\custom_file_dialog example for pyray compatibility

[EdgeCraftStudios]

Summary

This PR addresses a runtime error in the raygui_custom_file_dialog example where the function draw_rectangle_rounded_lines() was called with 5 arguments instead of the 4 expected by the pyray

Problem

Error Message:

TypeError: DrawRectangleRoundedLines expected 4 arguments, got 5

Cause:

The original example used the raylib C API:

DrawRectangleRoundedLines(rect, roundness, segments, lineThick, color);

However, pyray (Python bindings for raylib) defines the function with 4 arguments, excluding lineThick:

draw_rectangle_rounded_lines(rect: Rectangle, roundness: float, segments: int, color: Color)

Fix

The incorrect argument (lineThick) has been removed to match pyray's signature.

Testing

• Launched the gui\custom_file_dialog example.
• Opened the file dialog.
• Selected and displayed a .png image.
• No errors or crashes occurred.

[electronstudio]

The C API and the Pyray API signatures are the same so that wasnt the cause of the problem. The number of arguments was changed from 5 to 4 with the release of Raylib 5.5. So it seems the example was from Raylib 5.0.

Btw you’ve made a lot of other changes to the file beyond just fixing the bug. (I’m not a reviewer for this project though, so maybe that’s fine.)

[EdgeCraftStudios]

waiting for review