Whitelist for https://polkadot.subsquare.io/referenda/referendum/55

- Problem Statement: Lack of clarity on the Polkassembly Fellowship Referendum for the audience.
- Significance: Ensuring transparency and understanding of the referendum process.
- Proposed Solution: Implementing a whitelist for https://polkadot.subsquare.io/referenda/referendum/55.
- Expected Outcomes: Increased participation and engagement in the Polkassembly Fellowship Referendum.

#3 [Fellows] Referendum #3: Whitelist Nomination Pool Config