Merge bitcoin/bitcoin#24519: doc: update multisig-tutorial.md to descriptor wallet by default

5347c9732f doc: update multisig-tutorial.md to default wallet type (Jon Atack)

Pull request description:

  Follow-up to #24281 and https://github.com/bitcoin/bitcoin/pull/24281#issuecomment-1033996386. The default wallet type was changed to descriptor wallets in #23002.

ACKs for top commit:
  laanwj:
    ACK 5347c9732f
  michaelfolkson:
    ACK 5347c9732f
  achow101:
    ACK 5347c9732f
  theStack:
    Concept and code-review ACK 5347c9732f

Tree-SHA512: 8074a33ad253ecb7d3f78645a00c808c7c224996cc1748067928aa59ef31a58f24fcfc75169494b26a19c7fbbf23bbd78516ab4102bc52fa92f08f1f49b18b63

doc/multisig-tutorial.md

@@ -29,7 +29,7 @@ These three wallets should not be used directly for privacy reasons (public key
 ```bash
 for ((n=1;n<=3;n++))
 do
- ./src/bitcoin-cli -signet -named createwallet wallet_name="participant_${n}" descriptors=true
+ ./src/bitcoin-cli -signet createwallet "participant_${n}"
 done
 ```
 
@@ -109,7 +109,7 @@ Then import the descriptors created in the previous step using the `importdescri
 After that, `getwalletinfo` can be used to check if the wallet was created successfully.
 
 ```bash
-./src/bitcoin-cli -signet -named createwallet wallet_name="multisig_wallet_01" disable_private_keys=true blank=true descriptors=true
+./src/bitcoin-cli -signet -named createwallet wallet_name="multisig_wallet_01" disable_private_keys=true blank=true
 
 ./src/bitcoin-cli  -signet -rpcwallet="multisig_wallet_01" importdescriptors "$multisig_desc"