use full path

.github/workflows/test_bindings.yml

@@ -31,7 +31,7 @@ jobs:
           sudo cmake --install build
       - name: Run C examples
         run: |
-          cd examples/C_API
+          cd SPERR/examples/C_API
           ln -s ../../test_data .
           gcc -g -O3  2d.c -o 2d.out -lSPERR
           gcc -g -O3  3d.c -o 3d.out -lSPERR