Update README_EN.md

Author: TanujaSuryawanshi

solution/3400-3499/3465.Find Products with Valid Serial Numbers/README_EN.md

@@ -112,7 +112,7 @@ Based on the above rules, we can use a regular expression to match valid serial
 # Write your MySQL query statement below
 SELECT product_id, product_name, description
 FROM products
-WHERE description REGEXP '\\bSN[0-9]{4}-[0-9]{4}\\b'
+WHERE description REGEXP '(?-i)\\bSN[0-9]{4}-[0-9]{4}\\b'
 ORDER BY 1;
 ```
 
@@ -123,7 +123,7 @@ import pandas as pd
 
 
 def find_valid_serial_products(products: pd.DataFrame) -> pd.DataFrame:
-    valid_pattern = r"\bSN[0-9]{4}-[0-9]{4}\b"
+    valid_pattern = r"(?-i)\bSN[0-9]{4}-[0-9]{4}\b"
     valid_products = products[
         products["description"].str.contains(valid_pattern, regex=True)
     ]