chore(ui-view): fix console errors in InstUI documentation

INSTUI-4565

Author: ToMESSKa

packages/__docs__/src/TableOfContents/index.tsx

@@ -150,10 +150,10 @@ class TableOfContents extends Component<
       6: 'x-large'
     }
 
-    const TOC = TOCData.filter((data) => !!data.id).map((data) => {
+    const TOC = TOCData.filter((data) => !!data.id).map((data, index) => {
       return (
         <List.Item
-          key={data.id}
+          key={`${data.id}-${index}`}
           padding={`0 0 0 ${levelPaddingMap[data.level]}`}
         >
           <Link

packages/ui-view/src/View/README.md

@@ -435,7 +435,7 @@ type: example
   </View>
   <View focusWithin>
     if the <code>focusWithin</code> prop is <code>true</code>, the View will display the focus ring if any of its descendants receives focus
-    <div tabindex="0" role="button" style={{outline: 'none'}}>Tab here to see the focus outline</div>
+    <div tabIndex="0" role="button" style={{outline: 'none'}}>Tab here to see the focus outline</div>
   </View>
 </Flex>
 ```