changed 'ProxyErrorOverride Directive' to 'ProxyRequests Directive' in REFERENCE.md
changed 'ProxyErrorOverride Directive' to 'ProxyRequests Directive' in REFERENCE.md

traylenator/puppetlabs-apache,yakatz/puppetlabs-apache,puppetlabs/puppetlabs-apache,yakatz/puppetlabs-apache,traylenator/puppetlabs-apache,puppetlabs/puppetlabs-apache