elsever_package.py: Fixes on _add_references function

[GiorgosPa]

*Added a new case for the label harvesting to remove the ending parenthesis

[jalavik]

Perfect. Before I merge, can you just fix the commit message a bit (also for future reference).

• elsever_package.py: Fixes -> elsevier_package: fixes (typo there and .py can be dropped, lower case)
• Add a space after the asterix ('* ') before "Added a new..." to create some room.
• Usually in Invenio (and we can adopt the same strategy here) the commit messages are done in present tense, saying what this commit does instead of what it did. For example: Added a new case.. -> Adds a new case..
• Finish the sentence with a dot/full-stop (.): "..ending parenthesis" -> "..ending parenthesis."

I know it is tiny details, but it is important to keep things tidy and consistent. :+1:

[jalavik]

Actually, the commit you just pushed to replace this one was already merged (where I missed adding commit log remarks). Did you squash the minor change already that this request originally contained?

[GiorgosPa]

Yes I squashed it? should I undo it?

[GiorgosPa]

done