Update app.py

app.py

@@ -230,6 +230,9 @@ def model_infer(img_name):
     
     return image_vis, gt_mask, pr_mask
 PAGE_TITLE = "Polyp Segmentation" 
+SUBHEADER = "Polyps are growths in the colon which can be precursors to colon cancer and are thus of particular interest \
+             when performing colonoscopies. Improving automatic detection of polyps will help doctors analyze thousands of frames from colonoscopy videos \
+             and lead to more reliable and efficient prevention of colon cancer."
 
 def file_selector(folder_path='.'):
     filenames = os.listdir(folder_path)