Update docs.yml

Author: cicirello

.github/workflows/docs.yml

@@ -20,7 +20,8 @@ jobs:
     - name: Set up JDK 1.11
       uses: actions/setup-java@v2
       with:
-        java-version: 1.11
+        distribution: 'adopt'
+        java-version: '11'
 
     - name: Build docs with Maven
       run: mvn javadoc:javadoc