Update supporters.html

supporters.html

@@ -31,25 +31,25 @@ section_id: pages
     <div class="large-12 centered-text columns">
       <div class="work-wrapper">
             <a href="http://www.undp.org" target="blank" class="work space">
-              <img src="/images/@stock/UNDP.jpg" alt="">
+              <img src="/images/@stock/UNDP.svg" alt="">
               <div class="info center">
                 <h5>UNDP</h5>
               </div>
             </a>
             <a href="https://librespacefoundation.org/" target="blank" class="work space">
-              <img src="/images/@stock/lsf.png" alt="">
+              <img src="/images/@stock/lsf.svg" alt="">
               <div class="info center">
                 <h5>LSF</h5>
               </div>
             </a>
-            <a href="https://www.indiehosters.net/" target="blank" class="work space">
+            <a href="https://indie.host/" target="blank" class="work space">
-              <img src="/images/@stock/indiehosters.png" alt="">
+              <img src="/images/@stock/indiehosters.svg" alt="">
               <div class="info center">
                 <h5>IH</h5>
               </div>
             </a>
           <a href="http://www.revouchers.uk/" target="blank" class="work space">
-              <img src="/images/@stock/revouchers.png" alt="">
+              <img src="/images/@stock/revouchers.svg" alt="">
               <div class="info center">
                 <h5>Revouchers</h5>
               </div>