removed trailing comma

Author: TimidRobot

content/gsoc-2019/project-ideas-collection/cc-resource-archive/contents.lr

@@ -24,7 +24,7 @@ expected_result:
 
 Release of an up-to-date site that provides an interface for non-technical users to add content. It should be styled more modernly and to match CC's current website. It should be easily deployable and the code should be documented. We also want to take advantage of existing content and avoid duplication so it would be desirable to grab all the existing online resources on all the Creative Commons websites and external services used by CC (e.g Vimeo, YouTube, Flickr).
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-skills_recommended: Python or WordPress/PHP, basic understanding of databases, basic knowledge of APIs, potentially JavaScript,
+skills_recommended: Python or WordPress/PHP, basic understanding of databases, basic knowledge of APIs, potentially JavaScript
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 primary_mentor: Hugo Solar
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