Fix typo in resolution_scaling.rst
Fixes typo by removing erroneous letter `y`. `cany` -> `can`.
Typo is located here: https://docs.godotengine.org/en/latest/tutorials/3d/resolution_scaling.html#:~:text=3D%20section%2C%20you-,cany,-find%20several%20options
Thank you for such a great game engine!