Fix some typos

content/blog/2017-11-28-react-v16.2.0-fragment-support.md

@@ -33,7 +33,7 @@ More text.
 Even more text.
 ```
 
-Prior to version 16, the only way to acheive this in React was by wrapping the children in an extra element, usually a `div` or `span`:
+Prior to version 16, the only way to achieve this in React was by wrapping the children in an extra element, usually a `div` or `span`:
 
 ```js
 render() {
@@ -142,8 +142,8 @@ function Glossary(props) {
       {props.items.map(item => (
         // Without the `key`, React will fire a key warning
         <Fragment key={item.id}>
-          <dt>{item.term}</li>
-          <dd>{item.description}</li>
+          <dt>{item.term}</dt>
+          <dd>{item.description}</dd>
         </Fragment>
       )}
     </dl>