update twitter links

Author: Dhruvi16

content/contents.lr

@@ -17,7 +17,7 @@ links:
 
 <div class="hero-links">
   <a class="button small is-success row" href="/community">Join the Developer Community</a>
-  <a class="button small row" href="https://twitter.com/creativecommons"><i class="icon twitter"></i>Follow us on twitter</a>
+  <a class="button small row" href="https://twitter.com/cc_opensource"><i class="icon twitter"></i>Follow us on twitter</a>
 </div>
 
 #### get-involved ####