chore: add comment for staging deployment env var

Author: gdulafactset

.github/workflows/publish.yml

@@ -18,7 +18,7 @@ jobs:
       JRELEASER_GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
       JRELEASER_GPG_SECRET_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
       JRELEASER_GPG_PUBLIC_KEY: ${{ secrets.GPG_PUBLIC_KEY }}
-      JRELEASER_MAVENCENTRAL_STAGE: UPLOAD
+      JRELEASER_MAVENCENTRAL_STAGE: UPLOAD # Default is "FULL" https://jreleaser.org/guide/latest/reference/deploy/maven/maven-central.html#_staged_deployments
 
     steps:
       - name: Checkout repository