Need to fix a few links

[Jay Bosamiya]

https://travis-ci.org/InfoSecIITR/reading-material/builds/174199574#L185

• [L21] 404 https://paraschetal.in/writing-your-own-shellcode/
• [L47] https://www.pentesterlab.com/ SSL_connect returned=1 errno=0 state=unknown state: sslv3 alert handshake failure

[Akash Trehan]

pentesterlab probably blocks ssl3 requests since its insecure ... That link would probably have to bypassed.