add ack to RDF star WG

Author: pfps

spec/index.html

@@ -2192,6 +2192,12 @@ <h2>Security Considerations</h2>
 <section id="Acknowledgments" class="informative appendix" >
   <h2>Acknowledgments</h2>
 
+    <p>In addition to the editors, the following people have contributed to the RDF 1.2 version:
+      <span id="gh-contributors"></span>
+    </p>
+
+    <p data-include="common/participants.html"></p>
+
   <p>The basic idea of using an explicit extension mapping to allow self-application without
     violating the axiom of foundation was suggested by Christopher Menzel.
     The generalized RDF syntax used in <a href="#entailment_rules" class="sectionRef"></a>,