add solution excercise 03

Author: maurorodriguez

src/01-introduction/03-navigating-jsx-types.problem.tsx

@@ -2,11 +2,12 @@ export const Component = () => {
   return (
     <div
       // How do I figure out what type aria-posinset expects?
-      aria-posinset={}
+      aria-posinset={1}
       // How do I figure out what type onChange expects?
-      onChange={}
+      onChange={(e) => {}}
 
       // How do I get autocomplete with JSX?
+      
     />
   );
 };