canvas: drawImage 调整为绝对路径

pages/component/canvas/canvas.uvue

@@ -136,7 +136,7 @@
       onCreateImage() {
         this.renderingContext!.clearRect(0, 0, this.canvasWidth, this.canvasHeight)
         let image = this.canvasContext!.createImage();
-        image.src = "../../../static/logo.png"
+        image.src = "/static/logo.png"
         image.onload = () => {
           this.testCreateImage = true
           this.renderingContext?.drawImage(image, 0, 0, 100, 100);