message: Fix instructions for tinylicious port env variable
diff: @@ -22,7 +22,8 @@ npm run start
  Tinylicious uses port 7070 by default. You can change the port number by setting an environment
  variable named PORT to the desired number. For example:
  ```sh
  -PORT=6502 npm run start
  +$env:PORT=6502
  +npm run start
  ```
  ### Storage
  