Fixes typo in parameter name
diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index cebf73f..dadc56f 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -26,7 +26,7 @@
         additionalArg: ['']
         include:
           - java: 17
-            addtionalArg: --add-opens java.base/java.lang=ALL-UNNAMED
+            additionalArg: --add-opens java.base/java.lang=ALL-UNNAMED
     steps:
     - uses: actions/checkout@v2.3.5
     - name: Set up JDK ${{ matrix.java }}