actually define master branch here

Author: Andre601

.github/workflows/release_actions.yml

@@ -12,6 +12,8 @@ jobs:
     steps:
     - name: Checkout Code
       uses: actions/checkout@v2.3.2
+      with:
+        ref: 'master'
     - name: Set up Java 11
       uses: actions/setup-java@v1
       with:
@@ -25,7 +27,7 @@ jobs:
         
         git add docs
         git commit -m "Update Javadoc (${GITHUB_SHA:0:7})"
-        git push origin master
+        git push
   publish:
     needs: [generateJavadoc]
     if: success()