update：更新样式

fb1f08c4 · Shine-zwj · e9568d05 · fb1f08c4
--- a/src/components/app-help/app-help.scss
+++ b/src/components/app-help/app-help.scss
 .app-help {
    font-size: 20px;
    margin: 0 10px;
+    cursor: pointer;
 }
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