format comment

Signed-off-by: Augustin Husson <husson.augustin@gmail.com>

documentation/examples/custom-sd/adapter-usage/main.go

@@ -200,7 +200,7 @@ func (d *discovery) Run(ctx context.Context, ch chan<- []*targetgroup.Group) {
 			tgs = append(tgs, tg)
 			newSourceList[tg.Source] = true
 		}
-		// when targetGroup disappear, send an update with empty targetList
+		// When targetGroup disappear, send an update with empty targetList.
 		for key := range d.oldSourceList {
 			if !newSourceList[key] {
 				tgs = append(tgs, &targetgroup.Group{

documentation/examples/custom-sd/adapter/adapter.go

@@ -59,7 +59,7 @@ func generateTargetGroups(allTargetGroups map[string][]*targetgroup.Group) map[s
 	for k, sdTargetGroups := range allTargetGroups {
 		for i, group := range sdTargetGroups {
 
-			// There is no target, so no need to keep it
+			// There is no target, so no need to keep it.
 			if len(group.Targets) <= 0 {
 				continue
 			}

documentation/examples/custom-sd/adapter/adapter_test.go

@@ -22,7 +22,7 @@ import (
 )
 
 // TestGenerateTargetGroups checks that the target is correctly generated.
-// It covers the case when the target is empty
+// It covers the case when the target is empty.
 func TestGenerateTargetGroups(t *testing.T) {
 	testCases := []struct {
 		title            string