refactor(api): fix typo (#2391)

* refactor(api): fix typo

* refactor(api): remove newline

api/docker/jobservice.go

@@ -92,8 +92,8 @@ func pullImage(cli *client.Client, image string) error {
 	if err != nil {
 		return err
 	}
-
 	defer imageReadCloser.Close()
+
 	_, err = io.Copy(ioutil.Discard, imageReadCloser)
 	if err != nil {
 		return err

api/portainer.go

@@ -636,7 +636,7 @@ type (
 		Down(stack *Stack, endpoint *Endpoint) error
 	}
 
-	// JobService represtents a service that manages job execution on hosts
+	// JobService represents a service to manage job execution on hosts
 	JobService interface {
 		Execute(endpoint *Endpoint, image string, script []byte) error
 	}