Add logos for 11 HIFIS centres in team

Added the 11 logos of the partnering centres in TEAM page

Closes #40 (closed)

_layouts/team.html

@@ -35,7 +35,7 @@ It does on purpose NOT include the content of the markdown page.
 
             <div class="frontpage-jumbotron">
                 <section>
-                    <h1>11 partnering centres for Helmholtz</h1>
+                    <h1>11 partners for the entire Helmholtz Association</h1>
                     <div class="flex-content-wrapper">
 
                         <a href="https://www.awi.de/" class="btn btn-light btn-lg btn-logo">