changed the placeholder to getnighthawk new logo

Signed-off-by: Anita-ihuman <[email protected]>

Author: Anita-ihuman

docs/_includes/header.html

@@ -78,7 +78,7 @@
         <div class="project-name">
           <a href="{{ site.baseurl }}/">
             <img
-              src="{{ site.baseurl }}/assets/images/logos/getnighthawk-logo.svg"
+              src="{{ site.baseurl }}/assets/images/logos/getnighthawk.png"
               alt="GetNighthawk Logo"
               height="45"
             />&nbsp;

docs/_sass/about.scss

@@ -76,7 +76,7 @@
 .nighthawk-meshery-fig,
 img {
   text-align: center;
-  border-radius: 20px;
+  border-radius: 0px;
 }
 
 @media only screen and (max-width: 768px) {