Updated deposits struct after decreasing liquidity and liquidity example fixes

[pepebndc]

After withdrawing half of the liquidity, the struct of the deposit is not updated.

Updated the liquidity variable in the deposit to match the remaining value

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[adjkant]

Hi! We're in the process of an overhaul of our examples for clarity. Closing this as a result but thank you for the corrections here and we will use them accordingly!