build: try to fix failing ggml build

.github/workflows/main.yml

@@ -17,7 +17,7 @@ jobs:
         run: |
           echo "Build ggml examples"
           cd fundamentals/ggml
-          git submodule update --init --recursive ggml
+          git submodule update --init ggml
           make ggml-init
           make ggml
           make