Added link to secret detection topic in welcome.html
<ul>
<li><a href="https://dev.to/commjoen/secure-deployment-10-pointers-on-secrets-management-187j">Blog: 10 Pointers on Secrets Management</a></li>
<li><a href="https://owaspsamm.org/model/implementation/secure-deployment/stream-b/">OWASP SAMM on Secret Management</a></li>
+ <li><a href="https://github.com/topics/secrets-detection">The secret detection topic at Github</a></li>
</ul>
</div>
</div>
