TagGroup docs adding textValue to complex item examples (#4714)

Author: ktabors

packages/@react-spectrum/tag/docs/TagGroup.mdx

@@ -155,19 +155,19 @@ TagGroup supports an `onAction` handler that, when used with the `actionLabel` p
 
 ```tsx example
 <TagGroup aria-label="TagGroup with icons example">
-  <Item>
+  <Item textValue="News">
     <News />
     <Text>News</Text>
   </Item>
-  <Item>
+  <Item textValue="Travel">
     <Airplane />
     <Text>Travel</Text>
   </Item>
-  <Item>
+  <Item textValue="Gaming">
     <Game />
     <Text>Gaming</Text>
   </Item>
-  <Item>
+  <Item textValue="Shopping">
     <ShoppingCart />
     <Text>Shopping</Text>
   </Item>
@@ -178,19 +178,19 @@ TagGroup supports an `onAction` handler that, when used with the `actionLabel` p
 
 ```tsx example
 <TagGroup aria-label="TagGroup with avatars example">
-  <Item>
+  <Item textValue="Person 1">
     <Avatar src="https://i.imgur.com/kJOwAdv.png" />
     <Text>Person 1</Text>
   </Item>
-  <Item>
+  <Item textValue="Person 2">
     <Avatar src="https://i.imgur.com/kJOwAdv.png" />
     <Text>Person 2</Text>
   </Item>
-  <Item>
+  <Item textValue="Person 3">
     <Avatar src="https://i.imgur.com/kJOwAdv.png" />
     <Text>Person 3</Text>
   </Item>
-  <Item>
+  <Item textValue="Person 4">
     <Avatar src="https://i.imgur.com/kJOwAdv.png" />
     <Text>Person 4</Text>
   </Item>