github: fix indentation

Author: bt

.github/workflows/cmake-single-platform.yml

@@ -22,7 +22,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
       with:
-      submodules: recursive
+        submodules: recursive
 
     - name: Configure CMake
       # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.