typo: token bridge tutorial uses incorrect dir-name

[FilipHarald]

Here the tutorial is referencing token-bridge, but everywhere else it's called token_bridge.

https://github.com/AztecProtocol/aztec-packages/blob/master/docs/docs/tutorials/codealong/contract_tutorials/advanced/token_bridge/2_minting_on_aztec.md?plain=1#L9

[FilipHarald]

Also, these cds are unecessary: https://github.com/AztecProtocol/aztec-packages/blob/master/docs/docs/tutorials/codealong/contract_tutorials/advanced/token_bridge/4_typescript_glue_code.md?plain=1#L12