fix：修改 https

pkg/kutt/kutt.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"strings"
 	"time"
 )
 
@@ -153,5 +154,10 @@ func (c *Client) CreateInviteShortLink(ctx context.Context, baseURL, inviteCode,
 		return "", err
 	}
 
+	// 强制使用 HTTPS
+	if strings.HasPrefix(link.Link, "http://") {
+		link.Link = strings.Replace(link.Link, "http://", "https://", 1)
+	}
+
 	return link.Link, nil
 }