fix typo

Author: slachiewicz

.github/workflows/maven.yml

@@ -47,7 +47,7 @@ jobs:
         uses: actions/setup-java@v2.2.0
         with:
           java-version: ${{ matrix.java }}
-           distribution: 'temurin'
+          distribution: 'temurin'
 
       - name: Build with Maven
         run: mvn install javadoc:javadoc -e -B -V -Pno-tests-if-not-on-osx