New commercial support company to community page (#1119)

Disclaimer: I am currently employed by Weaveworks.
Signed-off-by: Brice Fernandes <brice@weave.works>

content/community.html

@@ -84,6 +84,7 @@ title: Community
       <li><a href="https://tincho.org">Martín Ferrari</a> (independent contractor)</li>
       <li><a href="https://www.robustperception.io">Robust Perception</a></li>
       <li><a href="https://sysdig.com/product/prometheus-support/">Sysdig</a></li>
+      <li><a href="https://www.weave.works/features/prometheus-monitoring/">Weaveworks</a></li>
     </ul>
 
     <h1>Acknowledgements</h1>