docs: update style of docsite notice

src/components/Notice/index.scss

@@ -7,6 +7,10 @@
     margin-bottom: 2 * $bf;
     border-radius: 3px 6px 6px 3px;
 
+    span[role=img] {
+        font-size: 22px;
+    }
+
     &.primary {
         background: var(--semi-color-primary-light-default);
         border-left: 4px solid var(--semi-color-primary);