Fixed typo in ci.yml on-section

Author: MFrikken

.github/workflows/ci.yml

@@ -0,0 +1,33 @@
+name: Java CI
+
+on:
+  push:
+    branches: 
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build: 
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix: 
+        java-version: [17]
+
+    steps:
+    - name: Check out repository
+      uses: actions/checkout@v2
+
+    - name: Set up JDK ${{ matrix.java-version }}
+      uses: actions/setup-java@v2
+      with: 
+        java-version: ${{ matrix.java-version }}
+        distribution: 'adoptopenjdk'
+
+    - name: Run tests
+      run: mvn test
+
+    - name: Build with Maven
+      run: mvn clean install