* Update start-restart-grafana.md
update the `docker-compose.yaml` file as it was not incomplete. Also remove the `grafana-piechart-panel` from the `GF_INSTALL_PLUGIN` as this plugin is available in the core and does not require to be installed separately.
I tested the code and all looks good and also the backend logs look fine.
* Update start-restart-grafana.md
update the docker compose command instead of using the old docker-compose command
* makes prettier
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Co-authored-by: Chris Moyer <chris.moyer@grafana.com>