Science Journal style: small error in repository and correction

Hi,
There is a small error in the style for Science. Parentheses around citations should not be italicised (although their contents should).
A simple correction is given below. I can not find out the correct way to submit this to the repository.

Change:

<citation collapse="citation-number">
<sort>
<key variable="citation-number"/>
</sort>
<layout prefix="(" suffix=")" delimiter=", " font-style="italic" >
<text variable="citation-number"/>
</layout>
</citation>

to:

<citation collapse="citation-number">
<sort>
<key variable="citation-number"/>
</sort>
<layout prefix="(" suffix=")" delimiter=", ">
<text font-style="italic" variable="citation-number"/>
</layout>
</citation>

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