added keys to children

src/client/js/components/StaffCredit/StaffCredit.jsx

@@ -63,10 +63,10 @@ export default class StaffCredit extends React.Component {
       const credit = contributors.map((contributor) => {
         const section = <p key={contributor.sectionName} className="dev-team my-5">{contributor.sectionName}</p>;
         const members = contributor.members.map((member) => {
-          const name = <p className="dev-name mb-5">{member.name}</p>;
+          const name = <p className="dev-name mb-5" key={member.name}>{member.name}</p>;
           if (member.position) {
             return (
-              <React.Fragment>
+              <React.Fragment key={member.position}>
                 <span className="dev-position">{member.position}</span>
                 {name}
               </React.Fragment>