Add handling for 301 (redirect) HTTP response codes

[FrankMaverick]

This commit enhances the URL testing script to handle HTTP response codes 301 (redirect) in addition to 200 (OK). Previously, the script only considered 200 as a valid response code. With this enhancement, URLs that return a 301 status code will also be treated as valid, ensuring comprehensive testing for URL accessibility.

Changes Made:

• Updated the test_url() function in the test script to include handling for HTTP response code 301.
• Modified the condition within the loop to check for both 200 and 301 response codes as valid.