Update api_boniu_stock_day_k.html

api/v1.0/demo/api_boniu_stock_day_k.html

@@ -72,7 +72,7 @@
 
             <p>
                 <span>code:</span>
-                <input type="text" class="input-text"  name="code" value="600008"/>
+                <input type="text" class="input-text"  name="code" value="600004"/>
             </p>
 
             <p>