Update README.md

README.md

@@ -21,5 +21,6 @@ mkosi -i -t directory -o /var/lib/machines/xcache-$(date +%Y-%m-%d-%H%M)
 To start xcache with the new image create a symlink and restart
 ```
 ln -s /var/lib/machines/<image-to-use> /var/lib/machines/xcache
-machinectl restart xcache
+machinectl stop xcache
+machinectl start xcache
 ```