Update app.py

app.py

@@ -394,10 +394,10 @@ with gr.Blocks(css=css) as demo:
                     <stop offset='100%' stop-color='black'/>
                   </linearGradient>
                 </defs>
-                <polyline id='pl' points='-3,0 0,127 255,127 258,0' stroke='url(#lg)' fill='none' stroke-width='3'/>
+                <polyline id='pl' points='-3,0 0,127 255,127 258,0' stroke='url(#lg)' fill='none' stroke-width='3' stroke-linejoin='round'/>
               </svg>""")
             blur_in = gr.Textbox(value="", label="Blur kernel size")
-            average = gr.HTML(value="""<label for='average'>Average</label><input id='average' type='range' style='width:256px;height:1em;' value='1' min='1' max='255' step='2' onclick='
+            average = gr.HTML(value="""<label for='average'>Average</label><input id='average' type='range' style='width:256px;height:1em;' value='1' min='1' max='15' step='2' onclick='
               var pts_a = document.getElementsByTagName(\"textarea\")[1].value.split(\" \");
               for (var i=0; i<pts_a.length; i++) {
                 var avg = 0;