fix github action script

Author: a-schild

.github/workflows/build.yaml

@@ -16,14 +16,14 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@5
-      with:
-        ref: ${{ github.ref }}
-    - name: Set up JDK 11
-      uses: actions/setup-java@v5
-      with:
-        java-version: 11
-        distribution: 'zulu'
-        architecture: x64
+      - uses: actions/checkout@v5
+        with:
+          ref: ${{ github.ref }}
+      - uses: actions/setup-java@v5
+        with:
+          java-version: 11
+          distribution: 'zulu'
+          architecture: x64
+
     - name: Build with Maven
       run: mvn -B package --file pom.xml