!21578 fix sample code error

Merge pull request !21578 from piggyguy_jdx/fix_qrcode_example_code

zh-cn/application-dev/reference/arkui-js-lite/js-components-basic-chart.md

@@ -165,7 +165,7 @@
            strokeColor: '#0081ff',
            fillColor: '#cce5ff',
            data: [763, 550, 551, 554, 731, 654, 525, 696, 595, 628, 791, 505, 613, 575, 475, 553, 491, 680, 657, 716],
-           gradient: true,
+           gradient: false,
          }
        ],
        lineOps: {

zh-cn/application-dev/reference/arkui-js-lite/js-components-basic-qrcode.md

@@ -63,10 +63,10 @@
 ```html
 <!-- xxx.hml -->
 <div class="container">
-  <qrcode value="{{qr_value}}" class="qrCode" style="color: {{qr_color}};background-color: {{qr_bcol}};"></qrcode>
+    <qrcode value="{{qr_value}}" class="qrCode" style="color: {{qr_col}};background-color: {{qr_bcol}};"></qrcode>
     <input type="button" onclick="changeColor" class="button">Color</input>
     <input type="button" onclick="changeBackgroundColor" class="button">BackgroundColor</input>
-  <input type="button" onclick="changeColor" class="button">Value</input>
+    <input type="button" onclick="changeValue" class="button">Value</input>
 </div>
 ```