Docs: Adding overview for new Display section

Bug: 30307086
Change-Id: Iffa511bc028fc28fef7be6806dcd33085f9d76e1
diff --git a/src/devices/tech/display/index.jd b/src/devices/tech/display/index.jd
index 660392e..25d6938 100644
--- a/src/devices/tech/display/index.jd
+++ b/src/devices/tech/display/index.jd
@@ -16,12 +16,7 @@
     See the License for the specific language governing permissions and
     limitations under the License.
 -->
-<div id="qv-wrapper">
-  <div id="qv">
-    <h2>In this document</h2>
-    <ol id="auto-toc">
-    </ol>
-  </div>
-</div>
 
-<p>Overview coming soon!</p>
+<p>This section covers AOSP implementation of various Android display
+settings such as do not disturb (DND) configurations and multi-window
+(split-screen, free-form, and picture-in-picture) options.</p>