refs #39156, add missing translation string

Author: jimyhuang

l10n/zh_TW/LC_MESSAGES/civicrm.mo

@@ -50293,5 +50293,5 @@ msgstr "請上傳將顯示在收據上的 Logo 圖片。"
 #: CRM/Contribute/Form/Task/PDF.php
 msgid ""
 "Email will NOT be sent to %1 contact(s) - communication preferences specify "
-"DO NOT NOTIFY or valid Email is NOT present"
+"DO NOT NOTIFY or valid Email is NOT present."
 msgstr "Email 不會寄送給 %1 位聯絡人（聯絡人沒有 Email，或已設定為「不要收到系統流程信件」）。"