Fix 404 endpoints

[BrandtH22]

[X] https://docs.chia.net/crash-course/cats-offers-nfts/ [X] https://docs.chia.net/chialisp-and-typescript/ [X] https://docs.chia.net/assets/files/piggybank-example-6b3512e514ef83216419cee75727311e.zip/ [X] https://docs.chia.net/zh-Hans/assets/files/piggybank-example-6b3512e514ef83216419cee75727311e.zip/ [] https://docs.chia.net/guides/chialisp-concepts [X] https://docs.chia.net/assets/files/Precursor-ChiaGreenPaper-82cb50060c575f3f71444a4b7430fb9d.pdf [X] https://docs.chia.net/assets/files/chia-custody-tool.png [] https://docs.chia.net/hc/en-us/articles/8373437367191-what-is-the-plot-filter-and-why-didn-t-my-plot-pass-it- [X] https://docs.chia.net/assets/files/chia-custody-tool-5e6e2f18e8f98c0faaf11bdf5fea5971.png/ [] https://docs.chia.net/puzzles/offers [X] https://docs.chia.net/zh-Hans/assets/files/chia-custody-tool-5e6e2f18e8f98c0faaf11bdf5fea5971.png/