fix(docs): capitalise person's name in tutorial (#11034)

Author: Luke Bennett

docs/tutorial/part-two/css-modules-userlist.png

@@ -296,7 +296,7 @@ export default () => (
     <User
       username="Bob Smith"
       avatar="https://s3.amazonaws.com/uifaces/faces/twitter/vladarbatov/128.jpg"
-      excerpt="I'm Bob smith, a vertically aligned type of guy. Lorem ipsum dolor sit amet, consectetur adipisicing elit."
+      excerpt="I'm Bob Smith, a vertically aligned type of guy. Lorem ipsum dolor sit amet, consectetur adipisicing elit."
     />
     {/* highlight-end */}
   </Container>