gen_bindings.yml: run zig build examples

.github/workflows/gen_bindings.yml

@@ -142,7 +142,7 @@ jobs:
             sudo apt-get update
             sudo apt-get install libgl1-mesa-dev libegl1-mesa-dev mesa-common-dev xorg-dev libasound-dev
       - name: build
-        run: zig build
+        run: zig build examples
 
   test-nim:
     needs: gen-bindings