Update doc/release-notes/6.7-release-notes.md

typo fix

Author: ofahimIQSS

doc/release-notes/6.7-release-notes.md

@@ -174,7 +174,7 @@ Video subtitles (vtt files) are now supported and indexed using full text indexi
 
 All new files uploaded with a .vtt extension will be assigned the context type "text/vtt" and shown as "Web Video Text Tracks". See upgrade instructions below to convert existing files.
 
-The upgrade instructions below also explain how to upgrade to v1.5 of the Dataverse Previewers, which includes and updated video previewer that supports subtitles. The new previewer version presents vtt files as subtitles for videos, and the naming convention is `<video-basename>.<language-tag>.vtt`. The previewer does not rely on the content type. A proper content type may hint users to ask permission for the subtitles together with a video.
+The upgrade instructions below also explain how to upgrade to v1.5 of the Dataverse Previewers, which includes an updated video previewer that supports subtitles. The new previewer version presents vtt files as subtitles for videos, and the naming convention is `<video-basename>.<language-tag>.vtt`. The previewer does not rely on the content type. A proper content type may hint users to ask permission for the subtitles together with a video.
 
 See also #11041.