Update Discord notification for rolling push

Existing push was notifying release was updated when it
is really just the rolling push. Updates message to be
more accurate.

.github/workflows/rolling.yml

@@ -65,4 +65,4 @@ jobs:
     - name: Notify Discord on completion
       if: success()
       run: |
-        ./script/message live-push
+        ./script/message rolling-push

script/message

@@ -9,6 +9,8 @@ elif [ "${TYPE}" == "rc-push" ]; then
   BOOT_URL="https://staging.boot.netboot.xyz/$(cat version.txt)-RC/index.html"
 elif [ "${TYPE}" == "live-push" ]; then
   BOOT_URL="https://boot.netboot.xyz/$(cat version.txt)/index.html"
+elif [ "${TYPE}" == "rolling-push" ]; then
+  BOOT_URL="https://boot.netboot.xyz/index.html"
 fi
 
 # send status to discord