sponsors: ishosting a new silver sponsor

Author: bagder

_sponsors.html

@@ -163,6 +163,7 @@
  <div class="silver"><p> <a class="x" href="https://www.monkeybreadsoftware.de/" rel="sponsored"><img src="pix/silver/monkeybreadsoftware-2.jpg" alt="MonkeyBreadSoftware"></a></div>
 <!-- Silver for curl on github -->
  <div class="silver"><p> <a class="x" href="https://route4me.com/" rel="sponsored"><img src="pix/silver/route4me.svg" alt="Route4Me"></a></div>
+ <div class="silver"><p> <a class="x" href="https://ishosting.com/" rel="sponsored"><img src="pix/silver/ishosting.svg" alt="is*hosting"></a></div>
 <!-- Silver end -->
 <div style="clear: both; max-width: 40em; margin-left: auto; margin-right: auto;">
 SUBTITLE(Join in and Sponsor!)