message: Update unit test commands for MathComponent tutorial
diff: @@ -1428,13 +1428,19 @@ Next, the test checks for the expected telemetry and events:
  The other test cases are similarly implemented for the other operations. See the tutorial code for their implementation.
  -To build the unit test, type:
  +You must first generate the unit test before you can build it. Enter:
  +
  +```
  +fprime-util generate --ut
  +```
  +
  +Once you generate the unit test, you can build the unit test by entering:
  ```
  fprime-util build --ut
  ```
  -The unit test can be run by typing the following in the `MathSender` (not `test/ut`) directory:
  +You can run the unit test by typing the following in the `MathSender` (not `test/ut`) directory:
  ```shell
  $ fprime-util check
  