add missing eventing module

Author: kameshsampath

staging.sh

@@ -3,6 +3,4 @@
 _CURR_DIR="$( cd "$(dirname "$0")" ; pwd -P )"
 rm -rf ./gh-pages .cache
 
-antora --pull --stacktrace  staging.yaml
-
-open gh-pages/index.html
+antora --pull --stacktrace  staging.yaml

staging.yaml

@@ -14,6 +14,8 @@ content:
       start_path: documentation
     - url: git@github.com:redhat-developer-demos/knative-tutorial-module-serving.git
       tags: []
+    - url: git@github.com:redhat-developer-demos/knative-tutorial-module-eventing.git
+      tags: []
       branches: master
     - url:  git@github.com:redhat-developer-demos/knative-tutorial-module-camelk.git
       tags: []