fixed logo

Author: fametrano

_layouts/default.html

@@ -41,7 +41,7 @@ <h1><a href="{{ '/' | absolute_url }}">{{ site.title | default: site.github.repo
             <p>
                 <a href="https://checksig.com">
                     <img width="180" alt="CheckSig"
-                        src="https://checksig.com/brand-guidelines/png/logo-black.png" />
+                        src="https://www.checksig.com/info/logo-black.png" />
                 </a>
             </p>
             <p>