Demo-rollup readme should match makefile

examples/demo-rollup/README.md

@@ -236,11 +236,11 @@ Arguments:
   <CALL_DATA_PATH>        Path to the json file containing the parameters for a module call
   <NONCE>                 Nonce for the transaction
 ```
-For our test, we'll use the test private key located at `examples/demo-stf/src/sov-cli/test_data/minter_private_key.json`. This private key also corresponds to the address used in the `minter_address` and `authorized_minters` fields of the `create_token.json` file.
+For our test, we'll use the test private key located at `examples/demo-stf/src/sov-cli/test_data/token_deployer_private_key.json`. This private key also corresponds to the address used in the `minter_address` and `authorized_minters` fields of the `create_token.json` file.
 
 2. Lets go ahead and serialize the transaction:
 ```
-$ ./target/debug/sov-cli serialize-call ./examples/demo-stf/src/sov-cli/test_data/minter_private_key.json Bank ./examples/demo-stf/src/sov-cli/test_data/create_token.json 1
+$ ./target/debug/sov-cli serialize-call ./examples/demo-stf/src/sov-cli/test_data/token_deployer_private_key.json Bank ./examples/demo-stf/src/sov-cli/test_data/create_token.json 1
 ```
 Once the above command executes successfully, there should be a file named `./examples/demo-stf/src/sov-cli/test_data/create_token.dat`:
 ```