rename service file to match service purpose

Author: copejon

docs/microshift-containerized/README.md

@@ -36,7 +36,7 @@ Before runnng microshift as a systemd service, ensure to update the host `crio-b
 Copy microshift unit file to `/etc/systemd/system` and the microshift-containerized run script to `/usr/bin`
 
 ```bash
-sudo cp packaging/systemd/microshift /etc/systemd/system/microshift
+sudo cp packaging/systemd/microshift-containerized.service /etc/systemd/system/microshift
 sudo cp packaging/systemd/microshift-containerized /usr/bin/
 ```
 
@@ -127,4 +127,4 @@ The `--dry-run` feature allows you to assemble information about which services,
 
 ```bash
 sudo  podman auto-update 
-```
+```