BUG/MEDIUM: ci: fix generating specification on github side

Author: oktalz

.github/workflows/actions.yml

@@ -22,7 +22,7 @@ jobs:
       id: go
     - name: Compare
       run: |
-        go run specification/build/build.go -file specification/haproxy-spec.yaml > specification/build/haproxy_spec_to_compare.yaml
+        go run cmd/specification/*.go -file specification/haproxy-spec.yaml > specification/build/haproxy_spec_to_compare.yaml
         diff -u specification/build/haproxy_spec_to_compare.yaml specification/build/haproxy_spec.yaml
     - name: YAML script validation
       run: |