fixed setting webhooks with a certificate

helpers.go

@@ -238,7 +238,7 @@ func NewWebhook(link string) WebhookConfig {
 	}
 }
 
-// NewWebhookWithCert creates a new webhook with a selfsigned certificate.
+// NewWebhookWithCert creates a new webhook with a certificate.
 //
 // link is the url you wish to get webhooks,
 // file contains a string to a file, or a FileReader or FileBytes.

methods.go

@@ -985,6 +985,7 @@ func (bot *BotAPI) SetWebhook(config WebhookConfig) (APIResponse, error) {
 	}
 
 	params := make(map[string]string)
+	params["url"] = config.URL.String()
 
 	resp, err := bot.UploadFile("setWebhook", params, "certificate", config.Certificate)
 	if err != nil {