CRM-14025 call postProcess hook ManageEvent form - per comment on function there are alternative ways to do this that should be considered in a later restructure

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* CRM-14025: Manage registration pages don't call postProcess hook
  http://issues.civicrm.org/jira/browse/CRM-14025
fix typo I spotted
Merge pull request #2247 from eileenmcnaughton/CRM-14025

CRM-14025 call postProcess hook ManageEvent form