Update app.py

app.py

@@ -17,7 +17,7 @@ def midpoint(x1, y1, x2, y2):
     return (x_mid, y_mid)
 
 def draw_mask(img, bounds, color='yellow', width=2):
-    graw = ImageDraw.Draw(img)
+    draw = ImageDraw.Draw(img)
     for bound in bounds:
         p0, p1, p2, p3 = bound[0]
         draw.line([*p0, *p1, *p2, *p3, *p0], fill=color, width=width)