chore: add documentation links for sdk3rd clients

pkg/sdk3rd/ratpanel/client.go

@@ -1,3 +1,5 @@
+// A simple SDK client for AcePanel.
+// API documentation: https://acepanel.net/en/advanced/api
 package ratpanel
 
 import (

pkg/sdk3rd/ratpanel/signer.go

@@ -20,6 +20,7 @@ type signer struct {
 func (s *signer) Sign(req *http.Request) error {
 	// API 签名机制：
 	// https://ratpanel.github.io/advanced/api#authentication-mechanism
+	// https://acepanel.net/en/advanced/api
 
 	payloadStr := ""
 	if req.Body != nil {