Fix typo

Author: sbglasius

.github/workflows/gradle.yml

@@ -56,7 +56,7 @@ jobs:
           GRAILS_PUBLISH_RELEASE: 'false'
           MAVEN_PUBLISH_USERNAME: ${{ secrets.MAVEN_PUBLISH_USERNAME }}
           MAVEN_PUBLISH_PASSWORD: ${{ secrets.MAVEN_PUBLISH_PASSWORD }}
-          MAVEN_PUBLISH_URL: $${{ secrets.MAVEN_PUBLISH_SNAPSHOT_URL }}
+          MAVEN_PUBLISH_URL: ${{ secrets.MAVEN_PUBLISH_SNAPSHOT_URL }}
         run: ./gradlew publish
       - name: "📖 Generate Snapshot Documentation"
         if: ${{ hashFiles('src/main/asciidoc/**') != '' }}