i18n: consistency tweaks

* Name should not be title-case
* Add full-stop

Spotted by Siebrand
https://translatewiki.net/wiki/Thread:Support/About_MediaWiki:Pronunciationrecording/en
https://translatewiki.net/wiki/Thread:Support/About_MediaWiki:Pronunciationrecording-upload-publish-failed/en

Change-Id: I0a507e57cbf714f57994969ccc86e27a070dd00e