Fix some comment nits.

pkg/commands/build/build.go

@@ -96,10 +96,11 @@ func NewCmdBuild(
 // Validate validates build command.
 func (o *Options) Validate(args []string) error {
 	if len(args) > 1 {
-		return errors.New("specify one path to " + pgmconfig.KustomizationFileNames[0])
+		return errors.New(
+			"specify one path to " + pgmconfig.KustomizationFileNames[0])
 	}
 	if len(args) == 0 {
-		o.kustomizationPath = "./"
+		o.kustomizationPath = loader.CWD
 	} else {
 		o.kustomizationPath = args[0]
 	}

pkg/commands/build/build_test.go

@@ -35,7 +35,7 @@ func TestBuildValidate(t *testing.T) {
 		path  string
 		erMsg string
 	}{
-		{"noargs", []string{}, "./", ""},
+		{"noargs", []string{}, ".", ""},
 		{"file", []string{"beans"}, "beans", ""},
 		{"path", []string{"a/b/c"}, "a/b/c", ""},
 		{"path", []string{"too", "many"},
@@ -54,7 +54,7 @@ func TestBuildValidate(t *testing.T) {
 			continue
 		}
 		if e != nil {
-			t.Errorf("%s: unknown error %v", mycase.name, e)
+			t.Errorf("%s: unknown error: %v", mycase.name, e)
 			continue
 		}
 		if opts.kustomizationPath != mycase.path {