Update social media link (#523)

Update social media link.

Signed-off-by: Najam Ul Saqib <najamulsaqib@tutamail.com>

Author: njmulsqb

addOns/help/src/main/javahelp/contents/credits.html

@@ -173,7 +173,7 @@ <H2>ZAP Extended Team</H2>
 <tr><td>&nbsp;&nbsp;&nbsp;&nbsp;</td><td>Dobin Rutishauser - Compass Security AG</td></tr>
 
 <tr><td>&nbsp;&nbsp;&nbsp;&nbsp;</td><td>Bunyanuch Saengnet</td></tr>
-<tr><td>&nbsp;&nbsp;&nbsp;&nbsp;</td><td>Najam Ul Saqib (<a href="https://www.twitter.com/njmulsqb">@njmulsqb</a>)</td></tr>
+<tr><td>&nbsp;&nbsp;&nbsp;&nbsp;</td><td>Najam Ul Saqib (<a href="https://infosec.exchange/@cybersoldier">@cybersoldier</a>)</td></tr>
 <tr><td>&nbsp;&nbsp;&nbsp;&nbsp;</td><td>Goran Sarenkapa (JordanGS)</td></tr>
 <tr><td>&nbsp;&nbsp;&nbsp;&nbsp;</td><td>Karan Preet Singh Sasan (<a href="https://github.com/preetkaran20">@preetkaran20</a>)</td></tr>
 <tr><td>&nbsp;&nbsp;&nbsp;&nbsp;</td><td>Pranav Saxena (<a href="https://github.com/pranavsaxena17">@pranavsaxena17</a>)</td></tr>