doc: Mention bitcoin wrapper executable in documentation

doc/managing-wallets.md

@@ -15,6 +15,8 @@ The following command, for example, creates a descriptor wallet. More informatio
 $ bitcoin-cli createwallet "wallet-01"
 ```
 
+`bitcoin rpc` can also be substituted for `bitcoin-cli`.
+
 By default, wallets are created in the `wallets` folder of the data directory, which varies by operating system, as shown below. The user can change the default by using the `-datadir` or `-walletdir` initialization parameters.
 
 | Operating System | Default wallet directory                                    |