github: fix workflow x3

Author: 9xbt

.github/workflows/ci.yml

@@ -14,8 +14,8 @@ jobs:
     steps:
     - uses: actions/checkout@v4
       with:
-      submodules: recursive
-      fetch-depth: 0
+        submodules: recursive
+        fetch-depth: 0
 
     - name: Install dependencies
       run: sudo apt update && sudo apt install -y build-essential nasm grub-pc-bin xorriso mtools genext2fs curl musl clang