add: 修复traceId 不一致问题

src/Http/HttpUtil.php

@@ -61,7 +61,7 @@ class HttpUtil
     {
         // 增加traceId
         if(is_array($headers)) {
-            $headers['X-TRACE-ID'] = Tracer::getTraceId();
+            $headers[] = 'X-TRACE-ID: ' . Tracer::getTraceId();
         }
         $url = $url ."?". http_build_query($params);
         return self::curl($url, $timeout, $retries, $headers, [], $proxy, 'GET', $curl_opts);
@@ -97,7 +97,7 @@ class HttpUtil
     {
         // 增加traceId
         if(is_array($headers)) {
-            $headers['X-TRACE-ID'] = Tracer::getTraceId();
+            $headers[] = 'X-TRACE-ID: ' . Tracer::getTraceId();
         }
         return self::curl($url, $timeout, $retries, $headers, $post, $proxy, 'POST', $curl_opts);
     }