docs/website/sponsors.html: update Google sponsorship for FOSDEM 2020

Google also sponsored the meeting location for the developer days after
FOSDEM 2020.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

docs/website/sponsors.html

@@ -80,8 +80,8 @@
 	      <div class="col-sm-12" style="height: 400px;">
 		<p><a href="http://www.google.com">Google</a> provided
 		  the logistics for the FOSDEM 2013, FOSDEM 2014,
-		  FOSDEM 2015, FOSDEM 2016, FOSDEM 2017, FOSDEM 2018
-		  and FOSDEM 2019 Developer Days in Brussels,
+		  FOSDEM 2015, FOSDEM 2016, FOSDEM 2017, FOSDEM 2018,
+		  FOSDEM 2019 and FOSDEM 2020 Developer Days in Brussels,
 		  Belgium.</p>
 	      </div>
 	    </div>