fixed 404 to min ada value calculations

[nirhy]

Updating documentation

Description of the change

clicking on the href for " Cardano ledger docs for further reading" led to 404
Updated the link to be https://cardano-ledger.readthedocs.io/en/latest/explanations/min-utxo-alonzo.html#example-min-ada-value-calculations-and-current-constants

[rdlrt]

Thanks

[katomm]

Good catch @nirhy

[Scitz0]

Should we link to both mary and alonzo docs for this, or is alonzo enough?
Like for example utxoEntrySizeWithoutVal in alonzo doc isn't really explained, the connection to coinSize constant updated in alonzo fork from 0 to 2. This changes the utxoEntrySizeWithoutVal value from 27 to 29. And 1000000 lovelace for Ada only utxo isn't correct. Its utxoEntrySize (txout) = utxoEntrySizeWithoutVal + size (v) => 999978 = 29 * 34482. But I guess this is a flaw in alonzo doc and that its better to update this.

Mary can be found here:
https://cardano-ledger.readthedocs.io/en/latest/explanations/min-utxo-mary.html