Update getting_started/first_3d_game/03.player_movement_code.rst

Co-authored-by: A Thousand Ships <[email protected]>

Author: skyace65

getting_started/first_3d_game/03.player_movement_code.rst

@@ -414,7 +414,7 @@ if it was attached to a crane.
 
 |image8|
 
-You can run the scene by pressing :kbd:`F6` (:kbd:`Cmd + R` on macOS) and 
+You can run the scene by pressing :kbd:`F6` (:kbd:`Cmd + R` on macOS) and
 press the arrow keys to move the character.
 
 |image9|