Update docs (15577)

Signed-off-by: Nester.zhou <ester.zhou@huawei.com>

en/application-dev/reference/arkui-ts/ts-canvasrenderingcontext2d.md

@@ -683,7 +683,7 @@ Fills a rectangle on the canvas.
           .height('100%')
           .backgroundColor('#ffff00')
           .onReady(() =>{
-            this.context.fillRect(0,30,100,100)
+            this.context.fillRect(30,30,100,100)
          })
         }
       .width('100%')
@@ -798,6 +798,7 @@ Draws filled text on the canvas.
 | text     | string | Yes  | ''     | Text to draw.         |
 | x        | number | Yes  | 0      | X-coordinate of the lower left corner of the text.|
 | y        | number | Yes  | 0      | Y-coordinate of the lower left corner of the text.|
+
 **Example**
 
   ```ts
@@ -1664,10 +1665,15 @@ struct Clip {
         .backgroundColor('#ffff00')
         .onReady(() =>{
           let region = new Path2D()
-          region.rect(80,10,20,130)
-          region.rect(40,50,100,50)
+          region.moveTo(30, 90)
+          region.lineTo(110, 20)
+          region.lineTo(240, 130)
+          region.lineTo(60, 130)
+          region.lineTo(190, 20)
+          region.lineTo(270, 90)
+          region.closePath()
           this.context.clip(region,"evenodd")
-          this.context.fillStyle = "rgb(255,0,0)"
+          this.context.fillStyle = "rgb(0,255,0)"
           this.context.fillRect(0, 0, this.context.width, this.context.height)
         })
     }

en/application-dev/reference/arkui-ts/ts-offscreencanvasrenderingcontext2d.md

@@ -727,7 +727,7 @@ Fills a rectangle on the canvas.
           .height('100%')
           .backgroundColor('#ffff00')
           .onReady(() =>{
-            this.offContext.fillRect(0,30,100,100)
+            this.offContext.fillRect(30,30,100,100)
             var image = this.offContext.transferToImageBitmap()
             this.context.transferFromImageBitmap(image)
          })
@@ -1766,11 +1766,16 @@ struct Clip {
         .height('100%')
         .backgroundColor('#ffff00')
         .onReady(() =>{
-          let region = new Path2D();
-          region.rect(80,10,20,130);
-          region.rect(40,50,100,50);
+          let region = new Path2D()
+          region.moveTo(30, 90)
+          region.lineTo(110, 20)
+          region.lineTo(240, 130)
+          region.lineTo(60, 130)
+          region.lineTo(190, 20)
+          region.lineTo(270, 90)
+          region.closePath()
           this.offContext.clip(region,"evenodd")
-          this.offContext.fillStyle = "rgb(255,0,0)"
+          this.offContext.fillStyle = "rgb(0,255,0)"
           this.offContext.fillRect(0, 0, 600, 600)
           var image = this.offContext.transferToImageBitmap()
           this.context.transferFromImageBitmap(image)