fix: log cli error correctly

Author: christophwitzko

cmd/semantic-release/main.go

@@ -41,7 +41,8 @@ func main() {
 
 	err := app.Run(os.Args)
 	if err != nil {
-		log.Fatal(err)
+		fmt.Printf("\n%s\n", err.Error())
+		os.Exit(1)
 	}
 }