fix: add newline at end of gradle.yml for consistency

Author: Pfeil

.github/workflows/gradle.yml

@@ -62,4 +62,4 @@ jobs:
     - name: Setup Gradle
       uses: gradle/actions/setup-gradle@v4
     - name: Compile Javadoc
-      run: ./gradlew javadoc
+      run: ./gradlew javadoc