Mark repo as host of workshop site

dontcallmedom · dontcallmedom · commit c95ec010fd2a · 2019-02-06T11:40:03.000+01:00
diff --git a/w3c.json b/w3c.json
@@ -0,0 +1,4 @@
+{
+  "contacts": "dontcallmedom",
+  "repo-type": "workshop"
+}
