Added missing punctuation mark [STYLE_GUIDE v7.x]
Description:
- Added a missing punctuation mark.
- Noticed the missing full stop while translating.
Reference: https://github.com/nodejs/i18n/pull/697
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Reference: https://github.com/nodejs/i18n/pull/697