修复签名画笔宽度

src/pages/UI7/UI7.tsx

@@ -282,7 +282,7 @@ const UI7: React.FC = () => {
     ctx.clearRect(0, 0, canvas.width, canvas.height);
     ctx.restore();
     ctx.strokeStyle = "#000000";
-    ctx.lineWidth = 2;
+    ctx.lineWidth = 10;
     ctx.lineCap = "round";
     ctx.lineJoin = "round";
   }, []);