No need to re-download the init script

doc/update/6.2-to-6.3.md

@@ -67,8 +67,7 @@ git diff 6-2-stable:config/gitlab.yml.example 6-3-stable:config/gitlab.yml.examp
 ### 6. Update Init script
 
 ```bash
-sudo rm /etc/init.d/gitlab
-sudo curl --output /etc/init.d/gitlab https://raw.github.com/gitlabhq/gitlabhq/6-3-stable/lib/support/init.d/gitlab
+sudo cp lib/support/init.d/gitlab /etc/init.d/gitlab
 sudo chmod +x /etc/init.d/gitlab
 ```