lint: cell sidebar (#427)

Author: echarles

packages/react/src/components/notebook/cell/sidebar/CellSidebarButton.tsx

@@ -132,8 +132,8 @@ export function CellSidebarButton(props: ICellSidebarProps): JSX.Element {
       <IconButton
         size="small"
         color="secondary"
-        aria-label="Add code cell above"
-        title="Add code cell above"
+        aria-label="Add code cell below"
+        title="Add code cell below"
         onClick={e => {
           e.preventDefault();
           commands.execute(NotebookCommandIds.insertBelow).catch(reason => {

packages/react/src/examples/extensions/celltoolbar/CellToolbarComponent.tsx

@@ -135,8 +135,8 @@ export const CellToolbarComponent = (props: ICellToolbarComponentProps) => {
         <IconButton
           size="small"
           color="secondary"
-          aria-label="Add code cell above"
-          title="Add code cell above"
+          aria-label="Add code cell below"
+          title="Add code cell below"
           onClick={e => {
             e.preventDefault();
             notebookStore.insertBelow({