Fix localization failure of error text in tx_srfeuserregister_setfixed

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/sr_feuser_register/trunk@84223 735d13b6-9817-0410-8766-e36946ffe9aa
Resolves #51953: Subpart ###EMAIL_TEMPLATE_SETFIXED_ENTER_ADMIN### missing in HTML template

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/sr_feuser_register/trunk@84224 735d13b6-9817-0410-8766-e36946ffe9aa