message: fix typo
  dokcer => docker
diff: @@ -20,7 +20,7 @@ curl -sSL https://get.docker.com | sh
  It is recommended to use [docker-compose](https://docs.docker.com/compose/) to run pigallery2.
  ### I.0 Install docker-compose
  -Official dokcer-compose installation guide [here](https://docs.docker.com/compose/install/),
  +Official docker-compose installation guide [here](https://docs.docker.com/compose/install/),
  but this will most likely do the trick ([source](https://dev.to/rohansawant/installing-docker-and-docker-compose-on-the-raspberry-pi-in-5-simple-steps-3mgl)):
  Install dependencies:
  ```bash
  