Fix typo tileXYToWroldX into tileXYToWorldX

[JohnSmithDoe]

There is a typo in the Node.js class of the pathfinder. "wrold" instead of "world"

• the typo lead to crashes on any pathfinder algorithm that used the node manager line A*-line for example.

  • when the tried to call the board function tileXYToWroldX instead of tileXYToWorldX

• additionally changed the attribute wroldY in the Node.js class

  • wroldY into worldY

[rexrainbow]

Thanks for finding this typo and fixed it.

[JohnSmithDoe]

Happy to help. Thanks for the nice lib.