Update "IoT Edge Challenges and Functions" reference (#240)

index.html

@@ -8562,8 +8562,8 @@ <h2>Edge Computing</h2>
         <dd>
 
           <ul>
-            <li><a href="https://tools.ietf.org/html/draft-hong-t2trg-iot-edge-computing-04">IoT Edge Challenges and
-                Functions</a>, IETF Internet-Draft, Network Working Group, version 04, expires 26 November 2020.</li>
+            <li><a href="https://datatracker.ietf.org/doc/html/draft-irtf-t2trg-iot-edge-10">IoT Edge Challenges and
+                Functions</a>, IETF Internet-Draft, Network Working Group, version 10, expires 18 March 2024.</li>
             <li><a href="https://www.iiconsortium.org/fog-and-edge-white-papers.htm">IIC/OpenFog</a>, Fog and Edge
               Computing White Papers</li>
             <li><a href="https://www.etsi.org/technologies/multi-access-edge-computing">ETSI MEC</a>, ETSI standards for