fix: update comment

Signed-off-by: s.v.churanov <s.v.churanov@tbank.ru>

pkg/requests/util/util.go

@@ -32,7 +32,7 @@ func GetRequestHost(req *http.Request) string {
 		host = req.Host
 	} else {
 		// Handle multiple hosts in X-Forwarded-Host (comma-separated)
-		// Take only the first host as per RFC 7239
+		// Take only the first host as common implementation convention
 		if hosts := strings.Split(host, ","); len(hosts) > 0 {
 			host = strings.TrimSpace(hosts[0])
 		}