Check command correction

README.md

@@ -262,7 +262,7 @@ lcl$ ansible-playbook --syntax-check playbooks/web.yml
 
 Check ("dry run") what would be done (something should *fail*):
 ``` shell
-lcl$ ansible-playbook --syntax-check playbooks/web.yml
+lcl$ ansible-playbook --check playbooks/web.yml
 
 PLAY [Configure webserver with nginx] *****************