Fix paths

[emsi]

Hello from the pygame community. https://www.pygame.org/contribute.html
Traceback (most recent call last):
  File "/home/emsi/PycharmProjects/UltimatePygameIntro/runner_class only.py", line 106, in <module>
    player.add(Player())
  File "/home/emsi/PycharmProjects/UltimatePygameIntro/runner_class only.py", line 8, in __init__
    player_walk_1 = pygame.image.load('graphics/player/player_walk_1.png').convert_alpha()
FileNotFoundError: No file 'graphics/player/player_walk_1.png' found in working director```

Clearly there is no player directory. It is Player .

[Wandervogel-001]

you should change the file name PLayer to player
Fly to fly and both Fly1.png and Fly2.png to
fly1.png - fly2.png