protocol-guild link is broken

[pinebit]

Describe the bug

Page: https://docs.obol.org/docs/sc/introducing-obol-splits#gnosis-safe-wallet

The following paragraph contains the broken link: https://protocol-guild.readthedocs.io/en/latest/3-smart-contract.html

A [SAFE](https://safe.global/) is a common method to administrate a mutable split. The most well-known deployment of this pattern is the [protocol **guild](https://protocol-guild.readthedocs.io/en/latest/3-smart-contract.html).**

To Reproduce

1. Go to https://docs.obol.org/docs/sc/introducing-obol-splits#gnosis-safe-wallet
2. Click on 'protocol guild'
3. See 404 error.

Expected behavior

The link has to direct to the correct location.