Fix code style.

lib/navigation.php

@@ -458,7 +458,7 @@ function gutenberg_disable_block_editor_for_navigation_post_type( $value, $post_
  * This function disables ability to edit wp_navigation posts via the UI.
  * This is because the post editor doesn't correctly work with wp_navigation type posts.
  *
- * @param string $url Url of the post.
+ * @param string  $url Url of the post.
  * @param integer $post_id Post ID.
  *
  * @return string
@@ -478,8 +478,8 @@ function gutenberg_disable_edit_links_for_navigation_post_type( $url, $post_id )
  * This function disables "Edit" row action for wp_navigation type posts.
  * This is because the post editor doesn't correctly work with wp_navigation type posts.
  *
- * @param array $actions A list of supported row actions for the post.
- * @param $post WP_Post object.
+ * @param array   $actions A list of supported row actions for the post.
+ * @param WP_Post $post An instance of WP_Post class.
  *
  * @return array
  */

phpunit/navigation-test.php

@@ -60,10 +60,10 @@ private function create_post( $type ) {
 	}
 
 	private function create_sample_post() {
-		 return $this->create_post( 'sample_post_type' );
+		return $this->create_post( 'sample_post_type' );
 	}
 
 	private function create_navigation_post() {
-		 return $this->create_post( 'wp_navigation' );
+		return $this->create_post( 'wp_navigation' );
 	}
 }