Adds FreshTracks to the homepage of prometheus (#1018)

* FreshTracks provides a hosted prometheus service with goals to help
enhance existing monitoring solutions
* check us out at https://freshtracks.ioSigned-off-by: John T Skarbek <jtslear@gmail.com>

content/community.html

@@ -78,6 +78,7 @@ title: Community
     </p>
     <ul>
       <li><a href="https://container-solutions.com">Container Solutions</a></li>
+      <li><a href="https://freshtracks.io">FreshTracks</a></li>
       <li><a href="https://juliusv.com">Julius Volz</a> (independent contractor)</li>
       <li><a href="https://kausal.co">Kausal</a></li>
       <li><a href="https://tincho.org">Martín Ferrari</a> (independent contractor)</li>

content/index.html

@@ -131,6 +131,7 @@ layout: jumbotron
           <a href="http://www.ericsson.com/"><img src="assets/company-logos/Ericsson.png"/></a>
           <a href="http://www.eurotech.com/"><img src="assets/company-logos/Eurotech.png"/></a>
           <a href="https://www.fosdem.org/"><img src="assets/company-logos/Fosdem.png"/></a>
+          <a href="https://freshtracks.io/"><img src="assets/company-logos/FreshTracks.png"/></a>
           <a href="https://giantswarm.io/"><img src="assets/company-logos/giantswarm.png"/></a>
           <a href="http://improbable.io/"><img src="assets/company-logos/Improbable.png"/></a>
           <a href="https://www.jodel-app.com/"><img src="assets/company-logos/Jodel.png"/></a>