Add links to Burpsuite tutorial

[mfaisalkhatri]

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https://portswigger.net/burp/documentation/desktop/getting-started https://portswigger.net/burp/pro/video-tutorials https://www.softwaretestinghelp.com/burp-suite-tutorial/ https://portswigger.net/web-security(Add this to security testing) https://tryhackme.com/module/learn-burp-suite