project 10: liquidate misuse amount and value

[baiwfg2]

In project 10 process_liquidate function, I think there's a big error in calculating and transferring.

let total_collateral = (sol_price.price as u64 * user.deposited_sol) + (usdc_price.price as u64 * user.deposited_usdc);
let total_borrowed = (sol_price.price as u64 * user.borrowed_sol) + (usdc_price.price as u64 * user.borrowed_usdc);

These two indicates value totalled in $, so they are not parameters for token_interface::transfer_checked which needs an amount parameter.

In order to calculate amount of liquidation_tokens to transfer, we need divide liquidation_value by borrowed_price. The same goes for collateral.

I know the lending protocol is kind of simplified, but the mistake of API calling should be remedied.