fix formatting and misspellings (#605)

* gofmt fixes

* fix misspellings

* add `gofmt -s`

cmd/registry/diff/differ.go

@@ -24,7 +24,7 @@ import (
 	"github.com/tufin/oasdiff/diff"
 )
 
-// change repersents one change in the diff.
+// change represents one change in the diff.
 type change struct {
 	fieldPath  stack
 	changeType string

cmd/registry/diff/differ_test.go

@@ -182,7 +182,7 @@ func TestMaps(t *testing.T) {
 		change := test.change
 		err := searchMapType(val, diffProto, &change)
 		if err != nil {
-			t.Fatalf("Failed to get diff proto, returnd with error: %+v", err)
+			t.Fatalf("Failed to get diff proto, returned with error: %+v", err)
 		}
 		if !cmp.Equal(test.wantProto, diffProto, opts) {
 			t.Errorf("searchMapType function returned unexpected diff (-want +got):\n%s", cmp.Diff(test.wantProto, diffProto, opts))

cmd/registry/patterns/parser.go

@@ -113,7 +113,7 @@ func SubstituteReferenceEntity(resourcePattern string, referred ResourceName) (R
 }
 
 func GetReferenceEntityType(resourcePattern string) (entity, entityType string, err error) {
-	// Reads the resourcePattern, finds out entity type in the $resource refernce
+	// Reads the resourcePattern, finds out entity type in the $resource reference
 	// Example:
 	// pattern: $resource.api/versions/-/specs/-
 	// returns "$resource.api","api"

cmd/registry/patterns/resources.go

@@ -325,7 +325,7 @@ func (ar ArtifactName) ParentName() ResourceName {
 }
 
 // This interface is used to describe generic resource instances
-// ResourceName is embeded, the only additional field is the UpdateTimestamp
+// ResourceName is embedded, the only additional field is the UpdateTimestamp
 type ResourceInstance interface {
 	ResourceName() ResourceName
 	UpdateTimestamp() time.Time

examples/pubsub/publish/main.go

@@ -49,7 +49,7 @@ func main() {
 	defer topic.Stop()
 
 	// Publish a sample message.
-	// Ordinarly, we would expect only the server to post on this topic.
+	// Ordinarily, we would expect only the server to post on this topic.
 	var results []*pubsub.PublishResult
 	r := topic.Publish(ctx, &pubsub.Message{
 		Data: []byte("hello world"),