fixup! chore(cardano): update docs and changelog

docs/methods/cardanoSignTransaction.md

@@ -39,7 +39,7 @@ TrezorConnect.cardanoSignTransaction(params).then(function(result) {
 
 #### `ORDINARY_TRANSACTION`
 
-Represents an ordinary user transaction transferring funds. Witnesses are determined from the transaction parameters and from `additionalWitnessPaths`.
+Represents an ordinary user transaction transferring funds, delegating stake or withdrawing rewards. The transaction will be witnessed by keys derived from paths included in the inputs, certificates and withdrawals. Additionaly, if token minting is present, transaction will also be witnessed by keys derived from paths included in `additionalWitnessRequests`.
 
 The transaction
 - *should* have valid `path` property on all `inputs`
@@ -61,8 +61,9 @@ The transaction
 These restrictions are in place due to a possibility of maliciously signing *another* part of the transaction with the pool owner path as we are not displaying device-owned paths on the device screen.
 
 #### MULTISIG_TRANSACTION
-Represents a multi-sig transaction using native scripts. Witnesses are determined only from `additionalWitnessPaths`.
+Represents a multi-sig transaction using native scripts. The transaction will only be signed by keys derived from paths included in `additionalWitnessRequests`.
 
+The transaction
 - *must* have `path` undefined on all `inputs`
 - *must not* contain output addresses given by parameters
 - *must not* contain a pool registration certificate