Fix typos

pkg/conversion/converter.go

@@ -244,7 +244,7 @@ func (c *Converter) convert(sv, dv reflect.Value, scope *scope) error {
 		}
 		args := []reflect.Value{sv.Addr(), dv.Addr(), reflect.ValueOf(scope)}
 		ret := fv.Call(args)[0].Interface()
-		// This convolution is necssary because nil interfaces won't convert
+		// This convolution is necessary because nil interfaces won't convert
 		// to errors.
 		if ret == nil {
 			return nil

pkg/runtime/interfaces.go

@@ -45,7 +45,7 @@ type SelfLinker interface {
 	SetSelfLink(obj Object, selfLink string) error
 	SelfLink(obj Object) (string, error)
 
-	// Knowing ID is sometimes necssary to use a SelfLinker.
+	// Knowing ID is sometimes necessary to use a SelfLinker.
 	ID(obj Object) (string, error)
 }