chore: Allow manually triggering Discovery update (#2397)

Fix typo in previous PR.

Author: vchudnov-g

.github/workflows/main.yml

@@ -20,7 +20,7 @@ on:
     # * is a special character in YAML so you have to quote this string
     # Run this Github Action every Tuesday at 7 AM UTC
     - cron:  '0 7 * * 2'
-  workflow-dispatch:
+  workflow_dispatch:
 
 jobs:
   build: