Linting fixes for frontend following eslint package upgrade

frontend/src/Activity/History/HistoryRow.js

@@ -41,11 +41,11 @@ class HistoryRow extends Component {
 
   onDetailsPress = () => {
     this.setState({ isDetailsModalOpen: true });
-  }
+  };
 
   onDetailsModalClose = () => {
     this.setState({ isDetailsModalOpen: false });
-  }
+  };
 
   //
   // Render