fix(gpu-amd): Ausgabe im Prometheus-Format (kein _value-Suffix); data_format=prometheus

install.sh

@@ -245,7 +245,7 @@ case "$GPU" in
 [[inputs.exec]]
   interval = "30s"
   timeout = "20s"
-  data_format = "influx"
+  data_format = "prometheus"
   commands = ["/etc/telegraf/gpu-rocm.sh"]
 EOF
     log "AMD-GPU erkannt: rocm-smi-exec-Input aktiv."