[DOCS] Add link to the Go client bulk helper (#55872)

docs/reference/docs/bulk.asciidoc

@@ -92,6 +92,10 @@ as this will slow things down.
 Some of the officially supported clients provide helpers to assist with
 bulk requests and reindexing of documents from one index to another:
 
+Go::
+
+    See https://github.com/elastic/go-elasticsearch/tree/master/_examples/bulk#indexergo[esutil.BulkIndexer]
+
 Perl::
 
     See https://metacpan.org/pod/Search::Elasticsearch::Client::5_0::Bulk[Search::Elasticsearch::Client::5_0::Bulk]
@@ -674,4 +678,4 @@ The API returns the following result.
   ]
 }
 ----
-// TESTRESPONSE[s/"index_uuid": "aAsFqTI0Tc2W0LCWgPNrOA"/"index_uuid": $body.$_path/]
+// TESTRESPONSE[s/"index_uuid": "aAsFqTI0Tc2W0LCWgPNrOA"/"index_uuid": $body.$_path/]