Update contents.lr

Author: Brylie Christopher Oxley

content/internships/project-ideas-collection/chooser-stewardship/contents.lr

@@ -26,6 +26,7 @@ Maintaining a healthy open-source project involves contributions from people wit
 - software development (using web-standard technologies)
 - project stewardship
 - community building
+- localization
 
 ---
 application_tips:
@@ -48,4 +49,4 @@ mentors:
 ---
 difficulty: Medium
 ---
-filter_value: difficulty-medium skill-css skill-javascript
+filter_value: difficulty-medium skill-css skill-javascript