Docs: Fix typo in installation/debian/index.md (grafana#92040)

Fix typo in installation/debian/index.md

Co-authored-by: Jack Baldry <[email protected]>

Author: sadikkuzu

docs/sources/setup-grafana/installation/debian/index.md

@@ -111,7 +111,7 @@ Complete any of the following steps to uninstall Grafana.
 
 To uninstall Grafana, run the following commands in a terminal window:
 
-1. If you configured Grafana to run with systemd, stop the systemd servivce for Grafana server:
+1. If you configured Grafana to run with systemd, stop the systemd service for Grafana server:
 
    ```shell
    sudo systemctl stop grafana-server