Use free camera in model shader example (#4428)

examples/shaders/shaders_model_shader.c

@@ -69,7 +69,7 @@ int main(void)
     {
         // Update
         //----------------------------------------------------------------------------------
-        UpdateCamera(&camera, CAMERA_FIRST_PERSON);
+        UpdateCamera(&camera, CAMERA_FREE);
         //----------------------------------------------------------------------------------
 
         // Draw