Straighten wrinkles in lint fixes

Fix small mistakes that slipped through with lint fixes (in
1230945564).

pkg/nfd-master/nfd-master.go

@@ -43,7 +43,7 @@ import (
 )
 
 const (
-	// LabelNs defines the Namespace for feature labels
+	// LabelNs defines the namespace for feature labels
 	LabelNs = "feature.node.kubernetes.io"
 
 	// AnnotationNsBase namespace for all NFD-related annotations

source/custom/custom.go

@@ -57,7 +57,7 @@ type Source struct {
 }
 
 // Name returns the name of the feature source
-func (s Source) Name() string { return "custom" }
+func (s Source) Name() string { return Name }
 
 // NewConfig method of the FeatureSource interface
 func (s *Source) NewConfig() source.Config { return newDefaultConfig() }

source/local/local.go

@@ -42,7 +42,7 @@ var (
 type Source struct{}
 
 // Name returns the name of the feature source
-func (s Source) Name() string { return "local" }
+func (s Source) Name() string { return Name }
 
 // NewConfig method of the FeatureSource interface
 func (s *Source) NewConfig() source.Config { return nil }

source/pci/pci.go

@@ -47,7 +47,7 @@ type Source struct {
 }
 
 // Name returns the name of the feature source
-func (s Source) Name() string { return "pci" }
+func (s Source) Name() string { return Name }
 
 // NewConfig method of the FeatureSource interface
 func (s *Source) NewConfig() source.Config { return newDefaultConfig() }

source/usb/usb.go

@@ -50,7 +50,7 @@ type Source struct {
 }
 
 // Name returns the name of the feature source
-func (s Source) Name() string { return "usb" }
+func (s Source) Name() string { return Name }
 
 // NewConfig method of the FeatureSource interface
 func (s *Source) NewConfig() source.Config { return newDefaultConfig() }