Site: Update ASF logo links

Author: rubenada

site/_includes/footer.html

@@ -2,7 +2,7 @@
   <div id="poweredby">
     <a href="http://www.apache.org/">
       <span class="sr-only">Apache</span>
-      <img src="{{ site.baseurl }}/img/feather.png" width="190" height="77" alt="Apache Logo"></a>
+      <img src="https://www.apache.org/img/asf_logo.png" width="190" height="77" alt="Apache Logo"></a>
   </div>
   <div id="copyright">
   <p>The contents of this website are Copyright &copy;&nbsp;{{ site.time | date: '%Y' }}

site/img/SupportApache-small.png

@@ -86,7 +86,7 @@ <h3>Sub-Projects</h3>
   <div class="grid">
     <div class="unit one-third">
       <a href="https://www.apache.org/foundation/contributing.html">
-        <img src="{{ site.baseurl }}/img/SupportApache-small.png" width="300" height="300" alt="Support Apache">
+        <img src="https://www.apache.org/img/feather_glyph_notm.png" width="300" height="300" alt="Support Apache">
       </a>
     </div>
     <div class="unit two-thirds">