Add source for image

docs/_Research-Data-Management/03-md.md

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 # Metadata
 
 <img src="https://upload.wikimedia.org/wikipedia/commons/e/ee/Metadata_is_a_love_note_to_the_future_%288071729256%29.jpg" alt="Metadata Is a Love Note to the Future - Jason Scott" width="200"/>
+(CC-BY - [cea +](https://www.flickr.com/people/33255628@N00), [Source](https://en.wikipedia.org/wiki/File:Metadata_is_a_love_note_to_the_future_(8071729256).jpg))
 
 ## Metadata is data about data