Update how-to-become-a-relayer.md

update the formula for choosing a relayer
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@ -29,9 +29,8 @@ Before you commit to sharing part of your journey with Tornado Cash users as a r
The formula for designating a relayer is as follows: The formula for designating a relayer is as follows:
* The list of all registered relayers is retrieved from the Relayer Registry smart contract. * The list of all registered relayers is retrieved from the Relayer Registry smart contract.
* The relayers are then sorted by cheapest fee. * For each relayer, calculate a score based on its stacked TORN and its fee. The higher the stake, the higher the score is; the higher the fee, the lower the score is. For Ethereum mainnet, the formula used to calculate the score is `stake * [1 - 25*(fee-0.33)^2]`; for sidechains, the formula is `stake * [1 - 11.89*(fee-0.01)^2]`.
* A pool of the cheapest 30% of relayers is selected. * Then randomly pick a relayer, weighted by its calculated score.
* From this pool the relayer is randomly picked, weighted by the TORN stake in Registry.
### 2. Set up Relayer ### 2. Set up Relayer