refactor(config): formatter defaults when not given in config file

Author: muthukrishnan24

config/config.go

@@ -11,6 +11,7 @@ import (
 	"golang.org/x/mod/semver"
 	yaml "gopkg.in/yaml.v2"
 
+	"github.com/conventionalcommit/commitlint/formatter"
 	"github.com/conventionalcommit/commitlint/internal"
 	"github.com/conventionalcommit/commitlint/internal/registry"
 	"github.com/conventionalcommit/commitlint/lint"
@@ -26,6 +27,7 @@ func Parse(confPath string) (*lint.Config, error) {
 
 	conf := &lint.Config{
 		MinVersion: internal.Version(),
+		Formatter:  (&formatter.DefaultFormatter{}).Name(),
 		Severity: lint.SeverityConfig{
 			Default: lint.SeverityError,
 		},