update the osism logo and website url (#67)

Signed-off-by: Jan Klare <[email protected]>

Author: jklare

_data/organizations.yml

@@ -1,7 +1,7 @@
 founding:
   - name: OSISM GmbH
     logo: /assets/osism.png
-    url: "https://osism.tech"
+    url: "https://osism.cloud"
     contributors:
       - name: Christian Berendt
         role: CEO