updates hearder information

app.py

@@ -26,9 +26,10 @@ from model import AppModel
 
 ## Edit and 
 DESCRIPTION = """# MMDetection
+![Image](https://user-images.githubusercontent.com/12907710/137271636-56ba1cd2-b110-4812-8221-b4c120320aa9.png)
 This is an unofficial demo for [https://github.com/open-mmlab/mmdetection](https://github.com/open-mmlab/mmdetection).
 With this demo, object detection using the Mask R-CNN & Faster R-CNN model can be performed. 
-The demo uses the [mmcv](https://github.com/open-mmlab/mmcv) library.You can upload image files, or use the example files below. 
+You can upload image files, or use the example files below. 
 For more information on the Models, find some helpful resources below. 
 - Pretrained model from [OpenMMlab](https://github.com/open-mmlab/mmdetection)
 - [Faster R-CNN Paper: Towards Real-Time Object