Resolved typo in HTML example for dnn-tabs and added TSX example

Author: david-poindexter

Diff for: packages/stencil-library/src/components/dnn-tabs/readme.md

@@ -9,7 +9,18 @@
         <p>Content of the first tab.</p>
     </dnn-tab>
     <dnn-tab tab-title="Second Tab">
-        <p>This is the second tab<p>
+        <p>This is the second tab</p>
+    </dnn-tab>
+</dnn-tabs>
+```
+
+```tsx
+<dnn-tabs>
+    <dnn-tab tabTitle="First Tab">
+        <p>Content of the first tab.</p>
+    </dnn-tab>
+    <dnn-tab tabTitle="Second Tab">
+        <p>This is the second tab</p>
     </dnn-tab>
 </dnn-tabs>
 ```