change EN tag

docs/en/base/core_bottom.md

@@ -4,8 +4,6 @@
 
 ***
 
-:memo:**[Description](#Description)**      🛒**[Purchase](https://m5stack.com/collections/m5-base/products/battery-bottom-150mah)**
-
 ## Description
 
 **Core BOTTOM** is the bottom part of M5Core like M5Basic and M5 GRAY, with M-BUS socket and extend pins on the side, also include a Lipo battery . If you want to buy these bottoms separately, you can get it from here.
@@ -21,3 +19,13 @@
 <img src="assets/img/product_pics/core/M-BUS.png" alt="M_BUS"  width="60%" height="36%">
 
 <img src="assets/img/product_pics/base/core_base_05.png">
+
+
+<script>
+
+   var purchase_link = 'https://m5stack.com/collections/m5-base/products/battery-bottom-150mah';
+
+   anchor_search(purchase_link);
+   scrollFunc();
+
+</script>