(MAINT) Add restarting the server link to index markdown doc
(MAINT) Add restarting the server link to index markdown doc

This commit adds a "Restarting the Server" link to the index.markdown
doc.  That link had somehow been present on the master branch but absent
from the current stable branch.

waynr/puppetserver,waynr/puppetserver,erikPrime/puppet-server,waynr/puppetserver,camlow325/puppet-server,briancain/puppet-server,puppetlabs/puppetserver,camlow325/puppet-server,camlow325/puppetserver,rlinehan/puppetserver,erikPrime/puppet-server,waynr/puppet-server,camlow325/puppetserver,erikPrime/puppetserver,erikPrime/puppetserver,camlow325/puppetserver,rlinehan/puppetserver,waynr/puppet-server,shrug/puppet-server,rlinehan/puppetserver,er0ck/puppetserver,puppetlabs/puppet-server,puppetlabs/puppetserver,briancain/puppet-server,rlinehan/puppet-server,rlinehan/puppetserver,erikPrime/puppetserver,erikPrime/puppet-server,puppetlabs/puppet-server,er0ck/puppetserver,shrug/puppet-server,camlow325/puppetserver,briancain/puppet-server,shrug/puppet-server,camlow325/puppet-server,er0ck/puppetserver,rlinehan/puppet-server,puppetlabs/puppetserver,waynr/puppet-server,rlinehan/puppet-server,puppetlabs/puppetserver,shrug/puppet-server,puppetlabs/puppet-server,er0ck/puppetserver