Merge pull request #803 from andrea-kyurchiev/fix/makes-changes-to-header

fix: changes speaker in header to Tom Sadler

Author: CiaraFlanagan

layouts/partials/header.html

@@ -87,7 +87,7 @@
   <div class="container">
     <div class="row align-items-center">
       <div class="col-md-12 text-center">
-        <i class="ti-calendar mr-2"></i>Join us on Thursday, June 20th, at 5pm BST / 6pm CEST / 11am CDT / 9am PDT when two of our members, Georg Grütter, from Bosch, and Dr. Wolfgang Gehring, from Mercedes-Benz Tech Innovation, will host an 
+        <i class="ti-calendar mr-2"></i>Join us on Thursday, June 20th, at 5pm BST / 6pm CEST / 11am CDT / 9am PDT when two of our members, Georg Grütter, from Bosch, and Tom Sadler from the BBC, will host an 
           <a href="https://bit.ly/AMAAM" class="btn-link ml-1" target="_blank">InnerSource Commons Ask Me Anything session.
             <i class="ti-arrow-right"></i></a>
         </p>