fix device total (DataDog#21180)

Author: gjulianm

gpu/metadata.csv

@@ -16,7 +16,7 @@ gpu.clock.throttle_reasons.sw_thermal_slowdown,gauge,,,,GPU clocks that are thro
 gpu.clock.throttle_reasons.sync_boost,gauge,,,,GPU clocks that are throttled to match clock speed of another GPU in the current sync boost group,0,gpu,clock.throttle_reasons.sync_boost,,
 gpu.core.limit,gauge,,core,,Number of GPU cores that the process/container/device has available,0,gpu,core.limit,,
 gpu.decoder_utilization,gauge,,percent,,Percentage of time the decoder was active,0,gpu,decoder_utilization,,
-gpu.device.total,gauge,,,,Number of devices active in the host,0,gpu,device.total,,
+gpu.device.total,gauge,15,,,Number of GPU devices found in the host,0,gpu,device.total,,
 gpu.dram_active,gauge,,percent,,Percentage of time the DRAM was active,0,gpu,dram_active,,
 gpu.encoder_utilization,gauge,,percent,,Percentage of time the encoder was active,0,gpu,encoder_utilization,,
 gpu.fan_speed,gauge,,percent,,Configured fan speed as a percentage of its maximum,0,gpu,fan_speed,,