Ran golangci-lint linter to fix lint errors

Author: Antoplt

internal/metric/disk.go

@@ -218,7 +218,7 @@ func CollectDiskMetrics() (MetricsSlice, []CustomErr) {
 	defaultDiskData := []*DiskData{
 		{
 			Device:             "unknown",
-			Mountpoint:			"unknown",
+			Mountpoint:         "unknown",
 			TotalBytes:         nil,
 			FreeBytes:          nil,
 			UsedBytes:          nil,

internal/metric/metric.go

@@ -65,7 +65,7 @@ func (m MemoryData) isMetric() {}
 
 type DiskData struct {
 	Device             string   `json:"device"`               // Device
-	Mountpoint 		   string	`json:"mountpoint"`			  // Mountpoint
+	Mountpoint         string   `json:"mountpoint"`           // Mountpoint
 	TotalBytes         *uint64  `json:"total_bytes"`          // Total space of device in bytes
 	FreeBytes          *uint64  `json:"free_bytes"`           // Free space of device in bytes
 	UsedBytes          *uint64  `json:"used_bytes"`           // Used space of device in bytes

test/integration/disk_test.go

@@ -48,7 +48,7 @@ func TestDiskMetricsContent(t *testing.T) {
 			t.Errorf("Disk device %s has an empty Mountpoint field", diskData.Device)
 		} else if diskData.Mountpoint == "unknown" {
 			t.Logf("Disk device %s has default 'unknown' mountpoint (metric collection may have failed)", diskData.Device)
- 		} else {
+		} else {
 			foundValidDisk = true
 		}
 	}
@@ -57,4 +57,4 @@ func TestDiskMetricsContent(t *testing.T) {
 	if !foundValidDisk {
 		t.Error("No valid disks with mountpoints were found. The mountpoint feature may not be working correctly.")
 	}
-}
+}