message: docs: Minor example code correction
  Makes example invocation match code beneath
diff: @@ -205,7 +205,7 @@ static args = [
  Flag options are non-positional arguments passed to the command. For example, if this command was run like this:
  ```
  -$ mycli --force --output=./myfile
  +$ mycli --force --file=./myfile
  ```
  _= is optional_
  