CI: Fix matrix options

Author: Tectu

.github/workflows/ci.yml

@@ -33,7 +33,7 @@ jobs:
       CC: ${{ matrix.toolchain.cc }}
       CXX: ${{ matrix.toolchain.cxx }}
 
-    name: "${{ matrix.toolchain.name }} (XML: ${{ matrix.xml }}) (YAML: ${{ matrix.yaml }})"
+    name: "${{ matrix.toolchain.name }} (XML: ${{ matrix.enable_xml }}) (YAML: ${{ matrix.enable_yaml }})"
     if: "!contains(github.event.head_commit.message, '[ci skip]')"
     steps:
       - uses: actions/checkout@v2
@@ -46,7 +46,7 @@ jobs:
         run: sudo apt install ${{ matrix.toolchain.packages }} -y
 
       - name: Configure
-        run: cmake -Bbuild -GNinja -DGPDS_BUILD_EXAMPLES=ON -DGPDS_BUILD_TESTS=ON -DGPDS_ENABLE_XML=${{ matrix.xml }} -DGPDS_ENABLE_YAML=${{ matrix.yaml }}
+        run: cmake -Bbuild -GNinja -DGPDS_BUILD_EXAMPLES=ON -DGPDS_BUILD_TESTS=ON -DGPDS_ENABLE_XML=${{ matrix.enable_xml }} -DGPDS_ENABLE_YAML=${{ matrix.enable_yaml }}
 
       - name: Build
         run: cmake --build build