MINOR: tweak log messaging

Author: aiharos

.github/workflows/main.yml

@@ -31,5 +31,7 @@ jobs:
       # Runs a set of commands using the runners shell
       - name: Run a multi-line script
         run: |
+          export
+          git show-ref
           git clone -b git_envs https://github.com/aiharos/github-actions.git
           cd github-actions/check-commit; go run check.go "../../."

check-commit/check.go

@@ -242,7 +242,7 @@ func LoadCommitPolicy(filename string) (CommitPolicyConfig, error) {
 	var config string
 
 	if data, err := ioutil.ReadFile(filename); err != nil {
-		log.Printf("error reading config (%s), using built-in fallback configuration (HAProxy defaults)", err)
+		log.Printf("warning: using built-in fallback configuration with HAProxy defaults (%s)", err)
 
 		config = defaultConf
 	} else {