Update docs.yml

Author: litetex

.github/workflows/docs.yml

@@ -11,10 +11,11 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: set up JDK 1.8
-        uses: actions/setup-java@v1.4.3
+      - name: set up JDK 8
+        uses: actions/setup-java@v2
         with:
-          java-version: 1.8
+          java-version: '8'
+          distribution: 'adopt'
 
       - name: Cache Gradle dependencies
         uses: actions/cache@v2